Pros
Lucrative commission potential - in my 3rd year out of Uni I earnt £100k. Great group of people to work with - everybody is a similar age and so many of your colleagues will become your friends that you go out with outside of work. Fantastic incentives and benefits - whilst top performers naturally receive the top incentives, from your first day there is the chance to win lunches, drinks and trips abroad. Chance for progression - If you hit your numbers you get promoted, it's pretty much as simple as that. You are given the autonomy to choose your career path whether that be management or individual contributor. Not many careers would enable you to reach management within 18 months of starting new.
Cons
Long hours - they are tough, there's no getting around it. I have worked weeks up to 60 hours. You are by no means required to do this and you are highly encouraged to work smarter not harder - but sometimes there is no substitute for hard work.