reason for registering

what is the reason that 1 must register to post answer questions here?

To prove the new member has a legitimate email address to make it more challenging for the ever-present spammers to gain access here.

Welcome to 1999. I haven't been on a forum since about '97 or '98 that was worth posting on that didn't have a registration system. Most forums that do not require registrations are typically low-traffic, yet heavily spammed wastes of time.

Welcome to 1999. I haven't been on a forum since about '97 or '98 that was worth posting on that didn't have a registration system. Most forums that do not require registrations are typically low-traffic, yet heavily spammed wastes of time.

Plus, I've been on sites that didn't require registration and you'd have one heck of a troll infestation. The same person posting under a dozren different names in the same thread just to stir things up.