First: ease of repair. I can do a complete -and I'm talking thorough- tune-up: oil & filter, plugs, wires, flush and fill the cooling system (including the "burp" which, by now, is second nature), fuel and air filter, top off all the fluids, both diffs, drain the tranny and refill, have a sandwhich and wash up all in about 2 1/2 hours - assuming I'm not in a hurry.
I can do a thermo/waterpump, upper and lower radiator hoses, timing belt job in around 3 hours -again, assuming I'm not in a big hurry.
Brakes? A no brainer in maybe an hour and 20 minutes (and that's all four corners).
Maybe one of the reasons I love my Subie so much is simply because even if she's broke, I'm confident that regardless of what the problem is, it's something that I'm confident that I can fix.
Subaru's are sooo user friendly it's sick man! Sick...
It's for this reason alone that I'm not shy (and I do it all the time actually) about saying that if I ever buy another vehicle (new or used) it'll be a Subaru.
I've done my fair share of wrenching. However, I'm not a total gearhead -but I like cars, and I'm mechanically minded (go-cart's anyone?

Heh... it's sorta funny, but anymore, I'm alway's looking for Legacy's.
If I pass a parking lot and I happen to notice a Legacy parked even waaaay in the farthest lot somewhere... I'll pull in and check it out; make notes to myself, wonder if I should leave a note and make an offer in case the owner is interested in selling it...
Ahhhh.... I love Subarus!
*sigh* Thanks Fuji Heavy Industries! For a fine fuckin' product and one seriously satisfied customer. You guys are alright.