well, in all seriousness I`d say buy it. There are many great titles available and some that seem great are in the works, but if you dont like Nintendo games and think the wii is just a novelty then don´t. Prejudices aside it is a great console. I grew up playing nintendo in the early 90s and then stopped at the begining of the gamecube years,but the wii really home console again (sure, I enjoyed ps1&2 and even gc but never bought felt the need to buy them).
Sure there are many crappy games for it but if you ever like Nintendo go for it. Also if you don´t like Nintendo games and care more for third parties then don´t buy it because like I said on my first post you´d buy, complaint and then sell it.
If you do decide to buy it enjoy ;)