This annoyed me too. I just wanted to play about and kill zombies in amusing ways if I felt like it.
The game isn't bad but certainly isn't great. It gets a bit repetitive and some of the boss fights are annoyingly difficult at times.
Same, just wanted to hold up in one of the shops and kill zombies that came through the entrance with as many daft inventions or items as possible but could only do that for an hour at a push due to the drug mechanic
Never got far enough into it due to the sheer amount of cutscenes which made load times on the PS3 take by far the longest I've seen in any game I've owned lol.
