Hey. I'm 40 and can spank my monkey all day when I'm bored!
Yank the chain,Spank the monkey,slap the taffy,bop the bishop,polish the sword etc...What ever we all call it...It's natural to paint the walls. It's good for the prostate.
Just make sure if you have the chance to pick the girl or your palm...YOU PICK THE GIRL. Dating Mary Palm and her 5 sisters is no fun if you can get the real thing.
I agree with CassCore. Definitely nothing to worry about, you should just embrace it and enjoy it. There is certainly nothing to feel guilty about.
I've had a partner now for 4 years and I still masturbate on a regular basis. It's a healthy thing to do. Otherwise you will have a buildup of seminal fluid and probably end up having a wet dream to get rid of it anyway. In my opinion it certainly isn't natural or healthy to let it build up.
Also, as you grow up and get a job etc etc you will have less time to be bored and masturbating will probably reduce in frequency. So my suggestion is to enjoy it while your young!
It really is a natural thing....but I understand why you might feel this way. A lot of times masturbating isn't very fulfilling because it is linked to sex which is supposed to be emotional and important and with another person. You have to understand that masturbation is a primal, instinctive kind of thing that isn't about emotion and feeling connected to someone like sex is. It is just about the orgasim. It's nothing to be ashamed of. More people do this than you probably realize. If you really feel bad about it when you feel the urge, remind yourself of how you feel after you're done and that you don't like that feeling. Go find something else to do like exercise or do something with your hands. Good luck! And don't feel ashamed or like a bad person. What you're doing is very normal and human nature.