You should stop. I used to be on it all the time and got quite competative, as I would not let anyone outbid me. It was a dangerous game especially if you had had a few drinks, I spent a fortune. I only go on it now and again if I really want something.
I got a little addicted to selling, not buying. But it's less dangerous that way round. I don't buy much though but do check my items that I am selling way to often