Lets see... I don't mind Newbies most of the time, as they are usually eager to learn.
It is even sometimes enjoyable to teach them.
Noobs/N00bs/Nubs/Scrubs/Failtards/etc all deserve any pain humiliation that falls upon them.
They (almost always) suck harder than a vacuum in the hands of a *cough*titute, they never take constructive criticism or do they ever listen to what others say, even when the other party is right (And they almost always are). They are also always irritating to no end.
Also, while the former can also be the latter, it is quite uncommon.
[Edit for obscenity]