Would I ever be happy towing with a half ton truck

There is no doubt that 1/2 ton trucks continue to get stronger and more capable. You can use one to tow 8,000 pounds or more, but why would you ?

They do not cost much less than a full sized truck. They have less room. I like a one ton with an 8 foot bed. Many half tons have a 5 1/2 foot bed, not even long enough to sleep in.