When you buy a new HTC phone, it's S-ON, which basically means that the internal memory is set read only at boot time, so you can't get write access to the system partition which is a requirement if you want to root your phone.
HTCs bootloader is terribly signed on their new phones, so that it's extremely difficult to hack. That's why it can only be done with an XTC Clip at the moment.
An XTC Clip is a piece of hardware that sells around 150USD (full version).
There's also a new one called XTC pay as you go which comes with only 1 "credit" to unlock 1 phone. This version is only about USD40 or so..
Best is to get someone in your area that owns such a clip to do that for you.. afterwards you can root and install custom roms and remove bloatware with titanium backup or freeze bloatware using any freeze app on the market..