Squash bugs?

[JaimieSkye]

I've been gardening for 10 years. I have never had problems with bugs or worms or anything. This year I managed to get squash bugs that ate all my zucchini plants overnight. It was just the zucchini, not any of the other types of squash. I had 3 other squash plants. Why did I get these nasty things this year when I've never had them before? Now do I have to worry about them returning next year? If so, what do I need to do? I am really missing all the zucchini that I've always had in the freezer all winter to make into breads and put into soups.