Just to be contrary, I'll say selling off old Amiga stuff and shifting to emulation has its positives.
If your real hardware spends a lot of time in storage and the urge to use it is rare, (less than once a year) then emulation is the most convienient way of having an Amiga around. WinUAE is capable more configurations and better spec's and compatability than my real 1Meg-A500 and A1200/030@40.
WinUAE gets used way more often now than my real hardware did 3 years ago when I had it sitting in the closet, its just easier and faster to get going. I'm happy that an Amiga newbie bought my old stuff and gets to explore the scene fresh, rather than it sit unused in storage for 10 years just because of sentiment.
The downside is real hardware is (a small) part of the fun. I dont regret selling my gear but I still have a passing interest in the hardware. Out of curiosity, I'd probably own an Amiga again if the price was right (like free), maybe just the unfamiliar models like the A600, A4000 and CDTV.