I am a SAHM with 3 dc's ( 9, 5 and 9 months).
Before I had my eldest I had a busy full time job which required me to work long hours and I had deadlines, deadlines, deadlines. Me and DH decided that I would SAH when we had dc. As much as I love being at home and probably do thrive on the life I have now, it isn't all rosy.
Definitely the hours are longer than pre dc. You don't get much appreciation from a baby for getting up in the night or from a toddler for getting him another drink or picking up the 100th toy from the floor.
I have family close by who I am close to and some friends who I get together with fairly regularly but there are still times when it is very lonely and even though my 9 year old can have a proper conversation with me, it isn't an adult one and she is at school most of the time.
The house looks like a bomb site when it is school holidays and everybody wants something all through the day, then DH arrives home and is surprised that the place looks like it has been robbed.
Bundling all the kids in a car on a freezing cold night to take one of them to a club is not my idea of living the dream either.
When you get somewhere and realise that the cuddle your dc gave you a few minutes ago resulted in a smear of snot down your front.
I could go on but most of you on here know exactly what its like.
I also think that those of us who are pointing out areas of child rearing which aren't so good, are not trying to upset those who work (part or full time) and have dc. Most of the things I have mentioned happen to them too. This isn't a WOH/SAH argument but one between staying at home with dc or staying at work with no dc. The op has NO children.
I must say that even though I wouldn't want to swap with the OP for the world. I do sometimes think back to pre dc days and try and remember what it was like to do something other than wipe bums and push the swings. To get up in a morning, get myself dressed, tidy up after myself, eat my breakfast and go to work. To sleep in at weekends or holidays, to decide on the spur of the moment to go to visit friends, eat out or go on a romantic weekend away.
Everyone is different though and I have respect for those who want to work full or part time with dc and those who choose to stay at home. Anyone who can't see why someone else wants to do something just because they don't is very short sighted.