Life expectancy of an outboard?

[neverenuf]

I currently own and run the below engines on my boats. Last year my 17 year old Evinrude 225 died. I replaced it with a new 225ho Etec with 8 years of non declining factory warranty. Easy decision for me based on warranty alone.

2007 Merc Optimax 225 ~300hrs
2017 Evinrude 225ho ~80hrs
2001 Evinrude 150 ficht ~350hrs
1997 Yamaha 40
1987 Mariner 40