Nicolas,
I understand you too well. My wish list is also getting longer (rather than shorter). My advice: don't fight it, it's like when you are caught in the sea in a very strong current - expert advice is there to let go and drift with the current, and not to swim against it (will save you energy) - otherwise you will get weak and drown. So, be happy that you have found such a passion and live it to the maximum. Few people are as lucky and havesuch a strong passion (makes us feel alive and life more interesting) - and if you buy the right watches in the right condition you will do well in the long term (to appease your conscience) and do your children a favour (better returns that in bonds with yields lower than inflation).
I have given up and am drifting for a while now