If I'd bought the M2 that I actually preferred in September 2017, I would have lost a hell of a lot more than the depreciation on the FK8. In terms of service Honda have been brilliant unlike BMW who were awful, had very few issues with my FK8 except sat nav went wrong, a reset was necessary that I did, been fine since, rusty nuts, replaced, battery came loose in holder, tightened.
Dotty that isn't in response to your experience but goes to show that not every one gets it right all the time regardless of marque.
You buy new then unfortunately you lose a lot, with almost every marque, look at McLaren, buy a new 720s lose 30k+ straight away.