It is NOT breaking the law to download MyWi or Bitesms. It is MY damn phone. I dont pirate, I pay for all my apps.
Furthermore, I get to put unlimited apps in the stock Apple folders, no need to have 2 game folders taking up space anymore (thanks to Infinifolders), I can watch Anime on Crunchyroll app whereever I am thanks to My3g (normally you would need wifi to watch any of their videos), can make facetime calls anywhere (also thanks to My3g), etc. etc.
And MyWi saved my life when I went on vacation, was using my laptop in my hotel everyday with tethering. I honestly dont use it much, as I have internet at home and work, but its one of those things that is nice to have when you need it. Sorry if people consider that as immoral for breaking ATT's terms of service, but what they want to charge just to tether is ridiculous.