Some of it is my OCD.
Some of it is I'm sure me just being different and having different interests, concerns, and priorities than a lot of other people.
For many people, having less games on Steam is worse than having bad games. And having bad games is an extremely trivial matters, while abandoning or not having many games is a non-trivial matter.
To me, quality over quantity is important and I made the mistake of going for quantity.
Let me tell you a secret: Most people don't care.
Most people don't care if they have 100, 200 or 548 Steam games. Most people just buy the games they want to try or want to play. And if they're shit, they're shit. And if they are both shit and CHEAP, who cares?
Only the collectors care about the quantity - and since they're collectors, they don't care about the quality. O have 591 entries on my Steam catalog. They're mostly Indie Games that I get from bundles (which I like the idea, so I support them), games I want to play or games I already played one way or another but decided I should give the creators some support.
What you're experiencing (and making a point of reporting to the Steam GAF thread as the first thing you do when you wake up the next day) is, I hope, otherwise you have bigger problems, just your OCD talking.
Which brings me to the second point I'm trying to make:
Don't start a new account. That's just wasteful. There are much better things you could do with the money you're going to waste re-buying games. You could donate it to charity on the next Humble Bundle or you could buy ME some games. Have you tried contacting support? Explain that you have OCD and that you don't care about the money, you just want this one game off your account.
In conclusion, everybody in this thread is going to tell you that, while others will simply mock you because, let's face it, it really is a minimal issue being blown out of proportion.
IMO, unless you're either asking for help from the community to talk you out of it or fishing for a new tag, there's not much else that can be discussed on the subject. In the end, it's your account and your money, so you should be able to do whatever you want with them.