The thing is I think people weren't answering it for a good reason. You can't just go to someone with pro's and con's for whether they should get a pet or not. If he had decided he wanted a snake and wasn't sure what species and wanted a pro's and con's for a certain species it would be different. But if he isn't sure about getting a snake at all... then he shouldn't get one at all. You should never feel indecisive about whether or not you should get a pet.
I think this is what you should take back to your friend rather than a list of pro's and con's
Reasons....
The reasons to get a snake are as follows;
* You have a passion for them (and this is why people wouldn't answer pro's and con's, because if he isn't sure then he doesn't have a passion!)
* you have the means to provide their full range of care... enclosure, heating, food etc
* you know you wont get bored of them when it turns out all they do is curl up in a hide all day long xD
The reasons you should not get a snake;
* You think it would be cool to tell people that you have a snake
* You want an interactive pet
* You want to watch it kill rodents
* You want a cheap and easy pet (while they are generally cheap and easy... when things go wrong they are just the opposite... if you want cheap and easy get a hermit crab
)
Anyone else have anything to ad to the reasons why/why not?