Is it even possible to "cheat" on homework?
Students ask for help with homework all the time -- from parents, siblings, classmates, tutors ...
They are free to consult their textbooks or look on line.
Maybe you mean that they are not really getting the answers by themselves, but instead are copying answers done by someone else and putting their own name on the work.
But it's hard to see how that is different from asking their older brother for the answer.
Doing homework is meant to be its own reward because it gives you mastery of the material.
But a lot of homework is tedium and a pointless waste if time.
My little godson had to do a "word search" puzzle for English, and then make his own word search.
The teacher must have thought, "This will be fun for the kids; it's something different, and it's a game."
But it wasn't fun. It was a tedious chore and a bore.
And it didn't teach one single thing.
It would have been far better if the teacher had said, "Well, I have no legitimate goal in assigning homework tonight, so I'll let the kids get to bed early tonight, or interact with their families, or follow a hobby, or get some exercise, or play a sport, or practice their musical instrument, or (fill in the blank.)
I have seen many times on this site students asking for help, saying, "It's almost midnight, and I am so tired. Can someone do these problems for me so I can go to bed?"
I estimate that students can spend 12 hours (or more) per day on school+homework. That's more time than an adult spends at a professional job.
And most of the homework is worthless.