I suppose it depends on what one's criteria are. I think that the decade that takes you from childhood to adulthood is the moste xciting and enjoyable. You are doing everything for the first time, spreading your wings, going off on holidays without your parents, staying out late, first job, first serious relationship.
I can remember at 25, recently married with house and mortgage, suddenly realising that I was through the transition and everything I now did, i did as the norm.
I am currently watching my 2 grandchildren go through the same transition, first Saturday job, going out to parties alone, preparing for university, travelling around with friends, learning to drive, watching their excitement at each new experience and responsibity.
For me the good times started again when I had to take voluntary redundancy into retirement in my early 50s. I had an mmediate pension, which meant an assured monthly income whether I was working or not. It was not very big, but DH was still working.
At 60 I got my state pension and other pensions came in. Just the freedom from the worry of knowing that without a job I had no money makes the rest of my life easy.