I understand that people have varying agreement on the negative aspects of signatures, but can someone tell me any positives?
Self-expression is not really necessary to be seen every time you post. If you have something interesting then it can be posted in your profile.
A quick pros vs cons makes me wonder why signatures still exist here.
Not sure what exactly your problem is with signatures per se. Wana elaborate?
#1 more room than in your profile
#2 better visibility than in your profile
#3 area where ref links are allowed
#4 allows formatting and/or colors depending on your rank