No one can tell you if you would regret not having children but surely regretting not having them is far better than having them and regretting it?
There are many women (and men) who regret having children. There are quite a few posts on here mums net that prove that plus there are websites/forums for people that regret it and they have many many members and posts.
To say no one regrets having children is absolute rubbish. Not all children are loved are they? If they were there would not be the abuse and even, sometimes, murders of children would there?
Me and DH were early 20's when we got married. We talked at length about having children. We both like children and I had always said I wanted them. When it came down to it though we decided not to have any. There were many reasons.
We are both now in our 60's and we have no regrets. In fact as time has gone by we have both been even more convinced we made the right decision.
We have nieces and nephews that we adore. We see them quite a lot and when they are younger they would often come and stay with us for weekends. We would baby sit often too.
I'll be honest, when we looked after our nieces and nephews I would occasionally have the thought that it would have been nice to have our own children. That thought though never last very long and as much as I loved having them I was quite happy when they went home.
We worry about our nieces and nephews futures (well all young people really). Lack of jobs, unaffordable housing. crime etc. We are glad we didn't bring children into what we see as a pretty horrible world plus not contributing to overpopulation.
I do very occasionally worry about what might happen if I or both of us live to be very old. My parents are in their 90's and we help them a lot with things like housework, house maintenance, shopping etc. I am a worrier though and none of us know what might happen. I might not live to be 90 or I might be fit and healthy if I do.
You can have children and still end up alone when old. Children can move abroad, fall out with you or even die before you. I know someone who is in their 90's who had 4 children - they have all died