In addition the tours you do later might be different than those earlier and even the places you travel could be different. As mentioned, I am fortunate to have taken multi-month trips at ages 29, 34, 38, 44, 50, 53 and 60. ....
You were fortunate to have the available time away from work to do that. My first bike tour was when I was 55. My second bike tour was a few months after I retired.
That said, I did a lot of week long canoe trips and kayak trips during the working years, and before that did several backpacking trips during summers while in college. For me the bike touring came late.