I really despise it when my birthday rolls around
Why do you hate your birthday so much?
Because nobody likes me and I hate my life.
If you hate your life, maybe you should consider changing things. Your birthday might be a good opportunity to make yourself take up a new hobby or set a new goal.
I couldn't care less about my birthday or my life.
You should still try to celebrate your birthday. That could make you feel a little better about your life.