Don't move in with me

My parents are thinking of moving in with me. I greet the news with silence and ...dare I say it, dismay. I think of the space I have now. The silence. The freedom. All will be gone if they were to move in with me. Or am I being too pessimistic? I think of plotting my escape overseas. But they say the more you run away from a problem, the more it will come back to haunt you. Do I want to believe this? And why is it that, more than any of my siblings, I find my parents' presence so profoundly suffocating?