"Which martial art is best?"
Thread rules:
1. Be polite.
2. No getting angry. If you're angry, don't post. Come back when you're not angry.
3. Try to understand that the question is loaded. Asking which martial art is "best" isn't much different from asking which type of hand tool is best. Hammers? Saws? Screwdrivers? It very obviously depends on what your goal is and what you want to use them for. If you want to claim that X is best, be sure to say that X is best...for the specific purpose of Y.
4. Try to understand that there are many, many martial arts...and simply as a matter of probability, the odds that the style or school that you chose based on criteria like "my friends are taking it" or "it's close" are probably not that good. Think very carefully about that.
5. Try to understand that nothing you say will convince anyone of anything. Words on a screen have very little weight compared to years of training combined with peer reinforcement in a social environment. Since you're not going to convince anyone else, you may as well listen to what they're saying and at least try to understand why they think what they do.
6. Inevitably references to specific UFC matches will come up. That's ok. But remember #3. There are valid reasons for taking martial arts besides winning ring fights.
7. Save people the trouble of asking for your credentials by volunteering them. If you're claiming that X is awesome and Y is stupid...please have the intellectual honesty to admit up front that you've studied X for 5 years and Y for zero years.
8. Please be specific. Remember that individual schools are different and not necessarily representative of the overall style that they claim to teach. Words like "karate" and "kung fu" are general categories that include multiple, and in some cases extremely different, individual styles. Don't try to claim that fruit is awful because you don't like plums.
Go.