Competition- at home?

I understand that competition abounds everywhere, the strongest of it being felt in workplaces, schools, etc. But competition at home? I really do not think there should be competition at home, the only enclave where one can take a break and just be at ease. Where should there always be an undercurrent brewing when things are being done, in the sense that one is secretly using an invisible barometer to measure how much the other person is doing while one goes about what she does? I believe that if you genuinely want to do something, just go ahead and do it and you should not bear grudges against others whom you think 'should have done what I have just done'. It does not make sense to me.

Is it me being oversensitive, is it that I am really a 'lazy bum', or is it that I have a weird sense of what is right and wrong? I'm really confounded by these matters of human dynamics, curiously, when I'm at home. I do not feel comfortable enough to do what I deem appropriate, that is not right.

What is it that is missing that is making me feeling so unsettled?