Ok, you say "they can't even cure the common cold." The common cold is one of the biggest problems in the drug industry. Not only does it mutate and evolve insanely quickly, but there are many different bacteria that can cause the "common cold." As soon as a drug company could release a drug that could handle the current most popular cold, that cold is long gone. Like they say, "the common cold isn't so common!"
What do you mean "when have they ever made better drugs?" You name all of these catch-all drugs, but that's what they are: they're catch-all. They have an overall positive effect on the human body. Sure these drugs provide a temporary "fix": it's in the nature of how they work. Your "common" headache can be caused by numerous problems. It would be a hassle having to go to the doctor every time you have a headache, have him diagnose the problem, then go to the drug store and search through the hundreds of different kinds of headache medicines for headaches produced by every single cause and then use it to fix that particular headache. Then the next time you get a headache it is most likely a different cause and you have to go through the whole process again. Isn't it much easier to take a drug once a day that will reduce the pain of headaches temporarily every time you have any kind of headache? One of the requirements for developing an effective drug is that it must be simplistic - anyone should have no problem taking it when they need it. It's like "the pill" - it's a cycle of pills but - guess what - most of the pills are placebos! It's just much easier for women to remember to take one pill a day than to remember which day is their "pill day."
The big difference between drug dealers and drug companies is that the products released by the drug companies don't hurt you in the long run. I'm sorry, but you can't compare the negative effects cocaine has on your body long term to taking Advil every time you feel bad.
Every drug you've known taken or heard about has always been a temporary fix? Oh really? Then how about the immunizations you've taken to prevent turburculosis, meningitis, pneumonia, and polio, among countless others. These diseases were the cancer, STD, HIV/AIDs, and Lou Ghering's disease of the past. They used to be deadly, but, believe it or not (*gasp*), drug companies actually created drugs that completely eliminated them from today's society. It's only a matter of time before we find cures for today's plagues (and by a matter of time I mean it could take decades or possibly even centuries), but by that time there will be new plagues. And the cycle goes on.