How many Steam Accounts do you have?

This one. :)

One.

I have two accounts. One is for trolling and this is my main acc..

Just one

1

2

One. Is there a good reason to want or have more than one?

One for every day of the month. And two for every Friday the 13th.

Nah, really just one. :)

Two, one is VAC banned (+ can't acces it anymore, can't remember password). Such a shame, it was the acc I created to play the 1.6 Beta (Steam was the biggest piece of crap ever back then :p).

Only had HL/CS 1.6 on my account and didn't play it anymore, so I didn't care if friends wanted to play on my acc. Year later when I was in the mood to play CS again... Vac banned. Assholes :(

Ah well, new account + new pack of HL generation and here I am (9 years and a few 100 games later :p)