Me and DH had our kids quite young - in our 20's. We are now mid 50's, and of course, they have left home. My sister decided to put her career first, and had very glamorous jobs that included world wide travel. She did this for about 20 years, before returning to the UK.
She is now married with 3 small children. Even though there's only 18 months between us, obviously our lifestyles are vastly different, as she has kids in primary school, but DH and I are now enjoying a lifestyle with not much responsibility, and we do enjoy travelling and eating out.
She is very annoyed by the disparity it would seem, and if we go on a trip, she will never ask how it was, and will boycott any FB posts (we don't post a lot, maybe a few pics). She would never say "how was your holiday?" and if it's mentioned in passing she will say "Hmm" with a cross expression.
I feel like reminding her, that whilst she was globe trotting, we were raising small kids and everything that goes along with it! It's not my fault that she decided to do it all 20 years later than me!
Rant over!