Long detailed plays are wonderful for the stimulation of the mind. The problem is finding someone that can give the time and detailed responses to the scenario that both have decided to play out. Many i have roleplayed with just give short nondescript responses, so its like talking to an...
Id say try it, you may enjoy it. I gave in to temptation a few years ago after getting turned on by the thought of sucking and playing with a cock. Love being Bi :)