Korgoth said:
I vote for Level 1. That's the starting level, and it's very satisfying to have to work your way up from there... and it also keeps the efforts of the other players, who did work their way up from there, from being cheapened.
By that logic, shouldn't someone who has been playing the game for two years get to play a higher level character than someone who's played for only two months?
It is also NOT satisfying to have to work your way up if you're constantly outclassed and useless to the group. Furthermore its practically impossible because you're going to get slaughtered at nearly every opportunity. If the DM tones the CR of encounters way down the higher level PC's will likely get bored. Let me repeat that I am stating this from experience.
There are lots of things a 1st level character can do with a higher level party: guard the rear, pole for traps, manage the mule, carry a light source (remember, somebody has to have a free hand for a light source unless you've got certain magic items), watch the ceiling and even participate in combat: firing wands, throwing grenade-like missles, and dragging other characters to safety
Taken in order (And assuming a 7 lvl disparity)...
1: They suck at guarding the rear because their spot/listen checks will be low. Furthermore, any rear attack is likely going to make a 1st level character a fine red mist.
2: Anyone can pole for traps. If by some chance the traps effects reach more than ten feet (not unlikely), this character is a fine red mist.
3: Yes, I decided to become an adventurer to manage someones pack-mule. Furthermore, if the mule (CR1) gets angry, theres a pretty good chance a 1st level character will be reduced to a fine red mist.
4: As with the mule, except for the fine red mist part. Also, at 8th level a party probably has some kind of permanent or magical light source.
5: As with guarding, this characters spot check is likely so low that it's worthless. Furthermore, this is not something so difficult that one higher level character can't take a second to bother with.
6: Firing wands? Good luck even managing to effectively use a wand at 1st level.
7: Standing 10 feet away and doing 1d6 damage to something is a good way of being reduced to a fine red mist. Firstly, a character at level 1 is likely going to have a mediocre-terrible to-hit bonus. Secondly, even if they do hit something, they've just made themselves a target.
8: Why in the world is a 1st level character going to be running towards something that just floored someone 8 times more powerful than they are. I am aware that characters aren't going to know the numbers, but if I see my friend "Jim the Owlbear Wrestler" get slaughtered my first instinct isn't going to be to rush towards whatever killed him; lest I get turned into...meh, you get the picture.