If you're having second thoughts, probably not.
On the other hand, if you havent used it for years and it doesnt inspire much enthusiasm anymore then getting rid of it was probably the thing to do.
I sold my A1200 and A500 with a bunch of other Amiga gear for AU$140 (USD$108) recently and have absolutely no regrets. I wouldve given them away, free to someone who would enjoy them, the $$$ was a bonus.
For me it was the fact that when I looked at them there was no enthusiasm anymore and that I have a HTPC that runs WinUAE at a cracking pace. Its much more convenient and rewarding to have a quick game there, than it was to unpack all my "real" Amiga stuff.
As a bonus, getting rid of all that old stuff was kinda refreshing too.