The only reasons I glitched a tank into my garage was because:
(1) Could call my mechanic up and have it delivered to me instead of wasting 1k and driving miles myself.
(2) No one could steal it. Except muggers, but you could see them a mile off.
(3) I could take it on missions, something I will truly miss.
I never griefed with my tank; quite the opposite - if I saw another player, I'd honk my horn to let people know I was friendly. But alas, my tank is gone. Not upset in the least, sad I can no longer use it for missions, but I'm okay with it in the long run. Got a nice new buggy out of the new update tho, so I'm happy.