Maybe we don't feel like sitting there RP'ing for an extended amount of time?
Sometimes I do, and many of those times it gets rather boring. Many times the people I'm toying with fly away without a scratch. Other times I kill them because they are boring me. Why should I have to sit there for "extended amounts of time" just because you want to? Once again you have to remember that a large part of RP is actions, not just words. There is no requirement for us to have to sit there for "extended amounts of time" exchanging words with you for us to be in RP.