If you fail to train them, one of the bad things they do is to trash the house while you are gone. That is separation anxiety. To deal with that, leave the puppy alone for a few minutes. As time passes, leave it alone for longer periods of time, and eventually you can leave it for hours without it freaking out and destroying the place. It simply needs to know that you will be back and that they have not been abandoned.
I've had many dogs over the years and never used a crate,or a choke chain, and I never ever hit one. None of them ever trashed the place while I was gone. Much of the training is simple common sense.