as someone who fooled around with older women when I was in my 20s id recommend you dont waste your time or theirs. I dont think it's as big of a deal if you dont want a family and she doesnt want one either, but dont string a woman along with promises youre going to stick around when youre just trying to get laid.
plus a lot of older women would normally not date younger unless they felt like they were out of options in their age range. so youre not exactly getting the best pick of women in terms of compatibility or mental wellness.
Pretty much all older woman/younger men dynamics are just hook ups, so its a better use of your time to just settle down with a girl youre own age