you should be able to feel pleasure if you want, nobody should be able to tell you what to do, and your not going to go to hell or anything for masterbating, if you were do you think allah wouldve put that thing and your hand there for a reason, seriously, your a teenager relax and have fun, you cant worry about pleasing allah your whole life, live a fulfilling, moral, life and believe what you want, do what you want, just know that the actions you act on and the actions you dont act on are the