Would you complain about the ban to the admin and possibly risk being perma-banned or serving a longer temp ban?
Wouldn't do anything, unless someone banned people without sanction (which would be overturned) then it would already be a unanimous or at least majority decision. Complaining would be moot, although it would be unlikely to change a temp ban to a permaban, the only way I can think of that happening is if someone threatened violence (or of course if they used a dupe to talk to admin, which would be stupid!).
Would you still read the forums posts without logging in?
Only if I had something relevant going on in a thread at the time that I wanted feedback on.
Would you literally count down the days until your ban ends?
How would you feel upon returning to the forum once your ban was up? If you've never been temp-banned before, use your imagination.
I expect if I got banned then shit would have hit the fan big time and it would be best to stay the hell away.
Or would you be apt to forget about the forum entirely?
The interwebs have too many offerings to get too caught up on one forum, I'd go troll INTPc