You should never apply to any college you wouldn’t be happy attending. And that applies as much to a safety school as to your highest reach school. A safety school is simply one where you have good chance of acceptance considering your grades and test scores.
So why should you love your safety school? Because in today’s competitive environment you may end up at your safety college. You don’t want to start your college life disgruntled because you didn’t get into a college you love. If you carefully choose which colleges to apply to, you will love all of your possible choices.