It is not being imposed up on. If you are on FB, it is a system you are willing to participate in. You are not obligated to communicate either way. An analogy

It is not being imposed up on. If you are on FB, it is a system you are willing to participate in. You are not obligated to communicate either way. An analogy that I can think of in the real world similar to what you are saying is, when I go to the mall, I like a hassle free shopping. Which means, I don't like to be bothered by sales/stores clerk. When I am at Macy's it is just a matter of time when a store clerk walks up to me to find out if I am finding everything allright. Now I can go ahead and be rude to that person considering he/she is intruding, or fake to be nice to quickly move on. The point is going to the mall was my decision and I chose to go, very aware of what the system has. You can't be bothered about what someone else thinks when you really don't care much about them. Ignoring a friend request is a valid option.