Why is Yahoo mail such a piece of ****?

It has not worked correctly in months. So, I figured that maybe you geniuses would need a little time to get it together. BUT THEN I come to find that you have been wasting all of your energy on a new format that is also awful. Stupid Marissa stole "conversation" formatted email from Gmail. You'd think because she came from Google, she'd know how to do it correctly and yet it completely sucks. So here are my problems.

1. No notification symbol (used to be a bell) at the top of my page to notify me of activity on message boards I contributed to.

2. I don't know if you fixed this, but the unforgiveable influx of ads on Black Friday literally had ad banners across the front of my email population.

3. The conversations in email threads are not working. They keep making my cursor jump up a few lines or emails. It's jumbled up, conversations don't line up and you don't have "expand all" button like gmail...piss poor.

4. SLOW, SLOW, SLOW. Everything is working slower since the new format of email, the sports pages and other new formats for Style, etc.

Does anyone have any relief for this junk? I always threatened to leave Yahoo for gmail...I do have a gmail account, but then I liked Yahoo's homepage and mail better. So with Yahoo's mail completely sucking and my recent discovery of creating a decent Google homepage, It might be time, because you ain't worth it anymore yahoo.