Anxiety – valid. But who these days does not have mental wellbeing issues? The world is a really scary place. Everyone gets anxious, I find it a bit of a misnomer really. I have huge anxieties that actually caused great suffering in our family the past 2 years, which I am getting over now but it affected my parenting and I am thankful for my husband who is a wonderful parent and prevented my issues from having a negative impact on our child.
But overall this isn't a reason not to have children. But I will say now, and likely again in my answer, that children should only be had because they are wanted wholeheartedly.
I was a difficult teenager and my brother…. Having a dedicated husband is the answer. Two parents who want to be parents, and who operate a family in an effective way is what is key here. I recommend you talk to him about parenting styles too:
What type of education? Home education? school? Private school? Public school?
Medical stuff, how would you want to tackle health problems etc?
Discipline, naughty step, gentle parenting, attachment or detached parenting?
Stuff like that, make sure you are on the same page.
Work – I work from home, home educate, and keep the home while my husband focuses on his career because I have found this works for me. You should also discuss this. My unpopular opinion, well not really opinion but observation, is that parenting is a full-time job in itself and there isn't time or emotional and mental capacity to focus on full-time work as well as parenting, for myself, and for many, as you see people asking how they can reduce their parenting responsibilities to fit in work, and this seems incredibly backwards. Work should be sacrificed for parenting.
My worries on the other hand are:
Ending up old and alone. – well you will if you don’t have children, who is going to care about you when old if not your children? (actually asking this question)
It's not true that you could end up alone if you parent your children to your fullest. Neither myself nor my husband have any intention of allowing our parents to have anything less than full-time care from US when they need it because we love them dearly.
Not leaving any trace in the world once I'm gone; not having any purpose. – totally irrelevant. If you have no children why does this matter?
Pragmatically, I feel like if I do leave it too late and regret it, - yes, you could.
you don’t know that you won't regret it. And you have less time than you think. I had mine at 34 and now can't have any more I don’t think, and I regret this. There's literally nothing I can do about it. I wish I'd had children earlier but I wasn't mentally equipped, and I should have been. This, in my view, is a social failure. I intend to impart to my daughter the importance of finding a good partner and co-operating with them to form a family for fulfilment. It's very few people who don’t actually want this innately.