Using Proxy is it good or bad ?

Why does everyone like to hide their IP Address ? do they think it's cool to show off using someone else IP Address ? No matter what the reason is, i always think proxy is useless if it's used just to browse around the web (i mean normal browsing around the web). Why did i say that ? Because proxy made every web statistical information results become inaccurate (if it's an anonymous proxy). And to make things clearer for you here’s an example.

Some site using tracking script to track geographical information of their site visitor and they’re doing this only for statistical purpose and make them write content specifically for that region. Now .. you’re frequently access their site using proxy, and let’s say you’re using proxy from somewhere in China. And because of it course the site author will think that most of his / her site visitors is coming from China .. and what are going to happen next ? he / she will create content specifically for China .. and this is just one example of what makes stats tracking inaccurate if most of your site visitors using proxy

So the conclusion is .. why there’s a need to use proxy if you just like browsing around the web ? other than that if you didn't know about this before, proxy server always create log files of the accessed url even if they say they’re giving a complete privacy or high anonymity proxy