It depends on what kind of family/financial security you can provide if something happens to you, since as an older dad you have fewer years in front of you to earn money for your kids’ upbringing and education, plus you are more likely to die or become less than 100% healthy while they are still young enough to really need you.
But if you are ALREADY financially prepared, and you are part of an extended community of some kind that will welcome your kids - well, then, why not?
Some people will accuse you of selfishness for wanting children at this stage of your life. But, it is selfish to want them at ANY point in your life, so I don’t know that this argument should stop you.
For the record, I have a 57-year-old friend who has a 10 year old and a 4 year old. Sometimes I think it is sad to consider the risk that he won’t be able to provide the physical/emotional/financial support they need as they age, especially the 4-year-old. The dad is quite healthy but has already given up some strenuous physical activities due to the usual aches and breakdowns of aging. Will he climb mountains or go on a memorable week-long camping trip when his 4-year-old is a teen? I doubt it, and that’s too bad.
On the other hand, last time I checked, the odds weren’t perfect for anyone, at any age. A healthy young man could get run over by a drunk driver; does that mean he shouldn’t have kids?
Also, assuming you are a good guy not just looking for a bimbo, I should think you could bring a lot of joy into the life of a mature woman (still young enough to have kids, but that could place her in her mid to late 30s, easy) who may have given up on finding a mate and having kids.
Just don’t wait TOO much longer, okay? Paul McCartney with a toddler is a bit icky, I gotta admit.