I have had 15 years at home with the kids, and not regretted it at all. Husband worked away often, three years with Monday to Friday, and tbh that was the best time. Lots of time with the girls, then at the weekend, lots of quality family time with no pressures of having to do shopping or washing or cleaning, just having fun.
Don't really qualify as a SAHP now, as older DD now left home, and younger doing GCSE's. However, still do a school run, don't shoot me, there are very good reasons for this, and still support DD2 in various ways, again for reasons. So, glad I am still able to commit to her 100% when she needs it.
Now out the other end, and supporting aged DM, almost another full time job, and doing various charity work......
Am married, no pension, but lots of joint savings, life insurance, joint ownership of everything and anything. I control all the finance
.