Yucatan organised bus travel vs rented car

Initially I wanted to rent a car. But after some good advice of friends  I
am reconsidering this intention.

I'd be pleased to receive your oppinion on that. (perhaps new
advantages/disadvantages and conclusion!!)

Some thoughts of mine concerning advantages and disadvantages:

car:

+  independent (choose the exact tour, stop at any place, return as i
please)
+  maybe cheaper
-   risk of getting robbed on remote streets (I've heard of people carrying
guns robbing you)
-   problem with accidents (as much as I figured out tourists are always
responsible, the police is corrupt and should be avoided)
-   risk of car getting robbed, stolen or damaged while visiting sights

thank you in advance

Buki