There's a serious disconnect here...

There is NO reason to assume that AVOIDING tax is the same as CHEATING tax.

There are plenty of ways to avoid tax without being a "cheat". Sure, many people won't take advantage of the legal ways to get around being gang raped for more than they need to pay, but that doesn't necessitate that just because YOU didn't take advantage of those ways that other people are cheats.

Again, this is just more buying into common misperceptions.

If you can avoid tax, why not? Large corporations do it all the time.'

Why is it ok for a fortune 500 company to do something, but it's "immoral" or "unethical" for you to do it?

I say BS. If you don't work the system, it will work you. Just take advantage of the ways to avoid tax that are available. There are LOTS of ways.