I don’t think your age matters. I’m turning 56 next month with a 15 and 17 year old. I was the oldest mum at the primary school gates.
Those who think it’s an horrific idea are probably speaking from their own experience where they’ve found parenting physically and mentally exhausting due to their own energy levels or lifestyle demands.
But parenting can be exhausting whether you’re 20 or 50
I only work around 30 hours a week, find time to go for a run 3 times a week, plus my job is very active, but I’m not superwoman, pretty ordinary really, so I guess if you feel fit enough to cope with the sleep deprivation, and take into account potential for complications otherwise unanticipated (debilitating prolapse/stillbirth risk/etc) plus your financial side is covered for the next 10 years regarding childcare costs, then why not.
It’s the getting pregnant part that could be hard.
Just because lots of women will reply on posts like this that they had their’s at 45/50/55 that’s not representative of the population as a whole - generally it’s incredibly difficult to conceive after 40.
I did at 46 but lost the baby just before the first scan. I know another woman who was 46 and had been trying since she was 40 to have her second child.
Life is short. Do you what you feel you must do. Heart over head situation IMO.