Plague:
First of all, I do have a right to complain, however you all have a right to ignore me

You cite the opinions of 'many of the top-tier players'... I'm not at all worried about the top-tier players. They can essentially ignore share as they generally don't need credits and can choose not to give any either. That's hardly the point. It's newbies that are hit hardest by the effects of credit sharing.
Also, lol at the notion of camping/complacency 'numbers'. Of course I can't statistically back up my argument, I have no idea how much less why you'd even begin gathering data for such an endeavour.
I'm also curious how you concluded that share is a 'minor game element'. Simple, sure, but the credit system is one of the most basic game mechanics in Tremulous and anything that changes the rewards and incentives for players could have a dramatic effect on the gameplay.
And, I'm not demanding that servers with share on turn it off. Simply reminding people that the option is there and that they should think about how it affects their game, and our game. Too many, I suspect, just accept share as part of Tremulous, when it isn't.
ThePyro: so your teammates have to work for their food. They become better players as a result and when it comes to rush time you're more likely to be able to rely on them to cover your arse when you're spending your frags on a kamikaze run. Also, your suggested idea almost discards any motivation for you to engage the enemy at all.
zybork: Your first bullet point is plain wrong, at least in the latter half. Teamwork = more kills = more credits. Share allows you to gain funds on the basis of
nothing at all. Social skills = teamwork, too.
Your second is not a flaw. Aside from the fact that there are very few significant random elements in Tremulous, sometimes you
are unlucky, and this allows for the kind of upsets and changes in fortune that make games interesting. Furthermore, even the most powerful classes in Tremulous will not leave you bankrupt after one unlucky run. You'll need to repeatedly fail to leave yourself penniless, and even then if you have any decent skill you'll be able to find some poor sucker to feed off.
The third is an attack on share, not a defence of it.
It's totally beyond me how you conclude that share combats killwhoring. It makes no logical sense whatsoever.
And why are you not afraid of losing your credits when share is on? Because they're not yours? If you beg in teamchat every time your wallet runs dry, you're more a burden than a benefit to your team. Unless you're making a net profit, in which case you do not need share to give you your confidence.
edit: I realise I'm reaching the tl;dr threshold. Sorry about that.