Re: No, you don't wish you'd have bought it.
If you HAD bought it a quarter century ago, you would have had to move it however many times, only for it to wind up, un-used, un-loved and non-functional in your basement, attic, shed or garage, smelling vaguely of rodent droppings.
I've managed to sell off almost all of my vintage computers, figured I was never going to actually DO anything with them other than stuff them in storage (at one time I had my Model 1 set up on a side table, not like I ever had company coming by to impress them with it). Just have a couple TI 99/4A machines left with some accessories; had someone interested recently but they never followed up (so I need to).
The Lisa was one of those "i'd like to have one someday" machines, along with the Data General DG1, and an IBM PS/2 P70. Had the latter two eventually, in non-working states, and eventually got rid of them.
Now what to do with the (still working) 32-bit PC laptops I have, since I've never been into vintage PC gaming (trying to set up one as a ReactOS test platform, if the ROS folks were even interested in regular validations on physical hardware).