Is it normal that i'm weird around friends and like my own space?

Putting it bluntly, I've made new friends, quite a few, they all want me to go and do stuff with them, but most of the time its alternating. So on Monday, I go around with John, Tuesday - Lee, Wednesday - Chris, and it just keeps going on, I've been lonely the majority of my life, I like being in solitude, I like me time sometimes, but at the same time, I don't like being alone sometimes, so I'm more or less fence-sitting on whether I should hang around with my friends or not, and then I blow them off with stuff and make excuses sometimes, doesn't this make me a despicable person?