Chemistry is chemistry, they're both different highs but that doesn't in and of itself mean one is better than the other. I agree with you though that anyone who needs pot/drugs to enjoy life is pitiful and sad, and drugs are no replacement for actually being happy and enjoying life. For me it's just a fun thing to do that makes games and whatnot more fun to play. I haven't smoked in at least a week and I'm still happily enjoying myself, playing games daily and having fun without any drugs, anything used in excess and relied upon too much will be bad of course (and some drugs, all the hard stuff, are just outright bad, no question), but that doesn't mean all drugs are inherently bad. Drugs should never and can never replace happiness, when used right they just make happy moments that much happier and more fun, and there's nothing at all wrong with that as long as you don't go overboard.