I have several reasons: allows me to eyeball ladder/room for suspect activity for future suspect tweaks, lets people know who are participating in suspect/raises awareness, etc. However, the key one that should matter is that if you don't have an alt with one with reqs, you can't vote/I won't count your vote.

NEW! The rest of smogon seems to now agree with me and this seems to be how most suspects are done now! Wouldn't you believe it..