Personally I don't like installing anything I don't need or want.
The more things that are installed, the more potential there is for problems.
I prefer a cleaner system without any un-needed "stuff".
I don't need AMD SDK or Hydravision, so I don't install them.
If later I find I do want them, I'll install them.
In some cases older drivers work better for me...
I have an HTPC with multiple displays, audio devices, media programs, codecs, utilities, etc...
For me, making sure everything works well together is more important than having the "latest and greatest".
I create a backup image before installing/uninstalling anything or trying configuration changes.