I distract myself with work, sometimes I work for the whole day. Is that bad ?

I don't think it's bad unless it's affecting the other parts of your life

I do that too but I don't think it is bad

But you gotta have fun too!

Not good idea of distract. U should divide the time between work, family, friends and some person hobby, like reading, even sleeping etc etc. That will be rather healthy distraction

At least you will have $$$ if your interests change one day..

Personally, I admire that. I would love to be able to lose myself in something productive.