Practically it probably is too hold, you probably won’t be in your child’s life as long as you want to be.
I’m an IVF baby now in my late 20s and my parents are 46 and 40 years older than me, but my mum died of cancer when I was just 26.
I got pregnant with my first child when my husband and I were 27, knowing that I wanted as much time as I could with my child, and to give her siblings whilst we were still young. Not everyone is ready when it’s the right time biologically though.
However much I wish I had younger parents, I still had a great childhood. The yearning for a child is real and powerful and if you feel compelled to be a parent and believe you could give a child a great life, then do it.
If you’re planning on having a child yourself it’s unlikely you’d be successful with IVF using your own eggs. Donor eggs would be more likely to lead to a pregnancy but certainly woman have had and will continue to have children in their mid 40s.
I think the “cut off” point for IVF at least is 50. I would agree that 50 is probably too old, but at 45 if you really want this now is the time to try to have a child as literally every month you wait your fertility declines to the point where it may be biologically impossible.