Justin9213, it seems as if we somehow have to come up with a life-threatening reason in order to convince to study Japanese. Certainly, if you live in the states and live in the typical environment there, Spanish might come more handy than japanese --after all, the ratio of Spanish speaker per capita is much more significant than that of Japanese speakers (in the states, of course).
You have the commodity of knowing one of the most used languages already, commercially speaking. You can go to many countries, and chances are they will speak a bit of your language because they were taught so at school.
At any rate, as far as Japanese goes, it's very specific, and thus you have to find your own specific reasons to study it. If you want to be rational about it, you might be better off learning Chinese, because more people speak Chinese than Japanese. Then again, is all a matter of circumstances and preference. Some people learnt it because they had no choice, and for some others it is a hobbie. That's all that there is to it.