I don't have a full lower, just a partial filling in for al but 2 molars and my front teeth... My father on the other hand broke down after far too many years and got both full uppers and lowers put in about 2 years ago, he's never been happier.

It did take a little getting used to, and it's important to get them adjusted as needed, especially in the beginning healing process, if they start wiggling, pinching, sliding etc don't wait or simply fill in with glues but get back to the dentist/denture place and get them adjusted. Don't suffer pain, get it taken care of right away. Well fitting dentures helps prevent wearing of the bone, protects the gums and should feel natural, not even realizing they're there until it's time to brush your teeth

I personally love my partial and I have a full upper (issues from long ago) and my father I don't think would ever dream of going without his dentures now that he has them. He's eating things he hasn't been able too since I was a child.