There's lots of good reasons to be anti-Biden.
BUT PER THE LAW, Biden is eligible to run and Trump is not.
This has nothing to do with feelings or even policy. Nothing to do with sides.
This is just the straight up facts. Trump has engaged in insurrection. Biden has not. The 14th Amendment is clear that insurrectionists are not eligible for office.
If you want to be eligible for office, dotn engage in insurrection. It's not fucking complicated.
Laws are important, I'm sure if someone broke into your home and stole all your stuff you wouldn't want the law to just shrug and go who cares.