Well, I haven't read everyone's posts but I can give you my experience. I am a Mormon; you will even find me on mormon.org (and yes, the first reply was right, 'Mormon' is a nickname and the full name is 'member of The Church of Jesus Christ of Latter-day Saints'. That's a bit of a mouthful though!).
I am definitely a Christian. I believe in Jesus Christ as the Son of God. I don't think anything is achieved by slagging off someone else's religion, even if you don't agree with them. Christ taught 'by their fruits, ye shall know them'. If someone says they are a Christian and they do their best to follow the teachings of Jesus Christ, that makes them a Christian IMO, whether they are LDS, RC, CofE, JW, Baptist... If you want to know what the Church says about it, see this article.
I just picked up one thing that concerned me in your posts OP: you say that you're not supposed to question the church leaders. That really would be scary! In fact, it is my duty as a member of the Church to question everything I'm taught, to think it over, to try it, to pray about it. My faith and what I believe is between me and God and if I want to know if something's true, I'll go right to the source. It's only by building a personal relationship with God and by finding things out for myself that I develop spiritually.
I am a convert to the Church. I was raised RC but converted six years ago. My DH is a member. My parents and brother were initially very against me joining the Church but have since mellowed as they've seen that it has made me a much nicer person. They like attending the social activities and have made friends with some of the other members of my Ward (like a CofE parish) but don't want to get involved any further. That's fine by me. I have never preached at them or felt any pressure to try to convert them either. Most members I've met are, if anything, a bit shy about sharing their beliefs unless someone asks about them. I have lots of friends from outside Church and am happy to answer questions or to invite people to socials but am not the least offended if they don't want to come.
My DH was a full-time missionary for two years. He, like every other FT missionary, paid his own costs (there are no paid ministry positions in the Church) and yes, he went to a training centre for two weeks to learn how to teach. The guide FT missionaries are taught to use is called Preach My Gospel and is available online here for anyone to see. My best friend in the Church before I got married didn't serve a mission. He still married in the temple and has full privileges as a member of the Church.
I got married in the temple. There are certain requirements I have to meet to be able to enter the temple and I have made covenants not to discuss the details of what happens inside, but I can say that nothing dodgy, evil or shocking happens there. It is a place of pure goodness. Pictures of the inside of the various temples and descriptions of what happens there and what they mean can be found here.
This is not a Sunday religion. It will take over your life because you will try to do as Jesus would. There are responsibilities to be taken on but is very heavily emphasised that your duty to your family comes first, your job second and your calling (or assignment) third. I've held various callings. My current calling is as Young Women's President. It is one of the more time-consuming callings but I have held it twice and don't find it overly onerous. More important is how I live my faith: how I treat my family, how trustworthy I am in my job. My life is far from perfect but it has focus and direction. You will meet lovely, wonderful members. You will meet members who are right old so-and-sos. You will meet people you don't really like. We're all just people. The only perfect person who has ever lived on this earth is Jesus Christ.
You can find a lot of people who will say bad things about the Church. They tend either not to be members or to be ex-members who are bitter either because they did something that led to excommunication and they hold a grudge or because they had a run-in with another member and flounced. Other people have had bad experiences with bad leaders. It happens unfortunately, though happily not often. The overwhelming majority of members of the Church are happy and fulfilled people. You will get very different stories from each side. The only way to be sure one way or the other is to read, to observe and ultimately, to ask God. The missionaries will show you a scripture in the Book of Mormon, right at the back, and ask you to put it into practice:
3 Behold, I would exhort you that when ye shall read these things, if it be wisdom in God that ye should read them, that ye would remember how merciful the Lord hath been unto the children of men, from the creation of Adam even down until the time that ye shall receive these things, and ponder it in your hearts.
4 And when ye shall receive these things, I would exhort you that ye would ask God, the Eternal Father, in the name of Christ, if these things are not true; and if ye shall ask with a sincere heart, with real intent, having faith in Christ, he will manifest the truth of it unto you, by the power of the Holy Ghost.
5 And by the power of the Holy Ghost ye may know the truth of all things.
Feel free to PM me if you have any questions :)