Is being undecided bad?

I’m really seriously struggling between choosing a biology major or a nursing major. All the advice I’ve gotten says I can’t do both, so I’m going to have to decide. Is it bad to go in undecided? I will most likely attend the University of Texas at Austin.

Some people don’t know what they want to do until they start taking coursework. It’s not a bad thing to not know, as a young 18 yr old, what you want to do for the next 40 years or so.
Take your time and make your decision when you’re ready.