A few years back I faced:
1. Ran out of room.
2. Don't ride as much as I used to (but plan on changing that this season [fingers crossed].
So we set about to locate a considerably larger place and one which is more conducive to working on bikes, storing bikes, displaying bikes and riding bikes. Problem mostly solved, as I still don't ride as much as I'd like to.
Of course, the above - while true - is largely said tongue in cheek. In the future I can definitely see myself much less concerned with acquisition, and at some point doing some downsizing. No one answer works for everyone. Puttering around with projects has been a good hobby that helps keep me occupied during the winter months, but at some point, I can see myself moving on to woodworking or ceramics or drawing or painting or leatherworking or... and limiting my wrenching to legitimate repairs and the odd thing that just lands in my lap. Everyone has their own interests, limitations and aspirations. I wish you success in sorting out what yours are (or will be).
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In search of what to search for.