You said it yourself, you don't even care for the degree. Ultimately it will just become a piece of paper if you aren't gonna use it, might aswell wipe your ass with it to save on toilet paper.
You may enjoy your times at college a bit, but you will simply be accruing a large student debt and not having any income. You will then be paying it off working in your dads business for quite a while before you can even contemplate doing something for yourself.
Go and join your dad's business, work there for a while (I'm assuming its decent pay & or you enjoy it) and you will either enjoy it or have a lot of cash. If it is enjoyment, you will feel good working there. If it is cash, you will feel great retiring early in life and having lots of cash to do all the things you've always wanted to do.
As for the girls part, girls don't give a shit about a piece of paper that says you can do this or that. As long as you are a nice person to know, that's all that matters.