Why do I want bad things to happen to me?

You seem to have low self-esteem. Start believing that you deserve the good things, and you may begin to want them.

Because you don't want to befriend yourself. Talk to yourself, befriend yourself and everything will flow from there.

We except the pain we think we deserve. I know this is always the answer I use but it's true. The sooner you realize that you don't deserve it, the sooner it will get better

Well according to some psychologists, when someone wants bad things to happen to them it's because they feel some kind of guilt, and therefore by feeling pain the subconsciously feel relived, because "they've gotten what they deserve". The problem is that guilt is generally "irrational" and it's not actually caused because someone did something wrong unpurpose, so it isn't actually their fault.

In most cases, wanting bad things to happen to you is a learned behavior. Perhaps you grew up in an environment where discord is normal and good things happening isn't 'normal' for you. It can be part of a chain of events that repeat from how you grew up. Please try to break that chain and not pass it on to your children. Seek help to understand that good things happening to you is a good motivator and you want to pass that along to future generations.

Because you feel like you deserve to be hurt or bad things to happen to you. Even though you deserve to be happy. I felt this way for a long time before I realized I just wanted to feel something instead of the constant numbness.

It depends on you. For example the reason I did, is because I was subconsciously punishing myself. It takes some soul searching, but it will become clear if you desire it to be.

Most likely, you feel guilt and as if you deserve pain. This is not true, but is just a part of depression

Form my experience it is usually either because you feel you deserve it, possibly cause you don't like yourself or because your not getting something out of life. For example I knew someone who always thought about being kidnapped or wanted to be kidnapped. They didn't actually want to be kidnapped, they just wanted someone to care about them and think of them as someone important in their lives.

In multiple cases of feeling that very same way, wanting bad things to happen to me, as well as some of my friends wanting similar things, I've often found that it's usually some form of Self-Anger/Hatred, Or Self-blame, that has grown in strength. Most of the time it's a case of a person being upset at themself, So they wish bad things would happen to them to punish them, or because they believe they do not deserve good things. A couple of friends I used to have would not be happy with good times for whatever reason, that it made them anxious, because If I remember right, it was that good things normally didn't happen to them, so they freaked out whenever good things did happen. Ask yourself if you're angry at yourself, hate yourself, seek punishment out of these negative feelings, etc. Might help narrow some of the possibilities down. That's all I've heard of, though.