I agree with ricky for the most part.
Respawn games are fun, because it lets you use most of the entire game time on the field, rather than sitting out being hit.
But personally, I actually perfer single elimination games, not only for the self caution and patience factor, but more for the realism it envokes on your fellow teammates. If the game is mostly squad based, and certain individuals are divided up among squads, IE: snipers, squad weapons, launchers, ect, they have to operate as a squad should.
So, If one of the members happens to get hit, the rest of the squad would have to learn keep functioning without a SAW gunner/sniper/pointman, rather than waiting for him to respawn and regroup. I really like the idea and the realism that single elimination portrays. Also, if the squad member must travel somewhat of a distance from their squad, he has much greater chance of never finding his way back ot his unit, and ends up off enirely somewhere else in the field.
With respawn games, the fighting itself isnt as real as it it would be in a hypothetical battle. When every combatant is allowed to get back in the battle after he is killed, it seems almost as if the game would never end. Its alot harder to judge which force wins or looses in the end when there is only constant engagement and no loss of numbers. When one team starts whittling down another, man by man, it becomes easily distinguishable which team is likely to come out on top.
Its a great load of fun for the players as well. When you find that your team is winning, and is slowly crushing the numbers of the enemy, you find the moral of your team is at its highest, and makes fighting even more thrilling than it already is!
And if unfortunatley in the situation that you find your numbers of teammates are dwindling, you become mentally empowered to fight your hardest, and best that you can, and if meant to happen, go out in a blaze of glory!
I used to play alot of single elimination games a few years ago. It was great fun, realistically, and socially with your teammates. But it seems as if Respawn games are more popular now.
There were a couple of games that used limited respawn that I played in that still retained the realistic aspect. I think we were only allowed one or two respawns during a game.