TUNE IT OR DIE!!

There are several problems for me with alternate tunings.
1) For every tuning, you have to learn new fingering.
2) It takes time to re-tune. Are you going to "patter" when folks came to hear you play or are you going to own a LOT of different instruments?
3) Alt. tuning often puts the tune/song in a different key from what it "says" it is. Can you figure out what key it actually is in to notify your fellow players?

Consequently, (with fiddle) I never use alt. tunings even tho they are out there. I just stick with standard. If the fingering is impossible in standard tuning, I just don't do the tune.