Why limit instead of no limit?

hey everyone, I am relatively new to the poker scene and the experienced player that is somewhat mentoring me is a solid limit player (winning online $30-$60). He has urged me to get into poker, low limit hold'em to be more exact. I have done so, and feel I am learning at a reasonable rate. I have another friend that is one of those loud mouths that claim to be earning $100 an hour single tabling the $1-$2 no limit tables. This guy claims that no limit is where the money is. I want to tell him to F off, but I am too kind. So I ask the group, is there any truth to the statement that low no limit is "easier" money than limit. What will make me a better player in the long run... a mixture of both?

Thanks all,
-Shaggy