What’s one feature you regret building and why?

In college, I built a clean little notice board for campus events - post, register, stay in the loop. That was the plan.

Then I got carried away. I added anonymous posts, upvotes, a forum - basically rebuilt Reddit for our college

I couldn’t validate the original idea, and it slowly spiraled into a confused mush of features - trying to be too many things at once, and doing none of them well.

Have you ever added “just one more thing” until your product forgot what it was supposed to be?