Just calm yourself, and don't always worry about being the first person to get the coolest stuff right when it comes out. You'll still get a chance to play with the latest games, and save yourself a bundle of money, if you buy your games at least a month or longer after their release date.
Or, if you have commitment issues, and like to have a new Wii game every week or so, then perhaps renting is the solution for you. You rent movie videos after all don't you? So why don't you rent video games?
If your going to be serious about renting games, don't just stop at your local neighbourhood video store. You need to broaden your horizons a little. It's always good to have a few places to turn to. There are a few online game rental companies where you simply pay a monthly fee, and then rent as many movies as you can play.
Oh sure, renting is not without it's imperfections. That are a few caveats, and you need to be aware of them, before you go leaping in. Delivery of the game usually via the post is the biggest one, but it's getting better. Meanwhile, the benefits of game rental are too numerous to be ignored.
Here's another great benefit of renting games. You can stop trying to keep track of the games that are worth paying $50 or $60 for. A rental is usually less than $7, so who cares if you get a lemon. It's cheap, and you can return it whenever you want.
Maybe, I'm the only Wii owner that didn't get the original memo, but you can actually download Wii games right from Nintendo on your Wii. Assuming of course, that you've bothered to hook it up to your WiFi. Another little juicy tidbit to note here, is that WiiWare games are really cheap. The usually average around $7. How's that for cheap Wii games?
Do stay away from all those unlimited Wii download sites. They're not really legal, and basically charge you to use download software that is already free. Between renting, WiiWare, and buying / selling Wii games on eBay, there's already enough legit ways to get great bargains on Wii games.