Anyone that made a druid in the hopes of getting rich by porting people is likely to end up disappointed. Honestly, there are much faster and FAR less boring ways to make money than playing taxi.
So why make a druid? I have one, and am playing him right now (posting while i med
[You must be logged in to view images. Log in or Register.]). They aren't the best soloers- that goes to necros or mages, depending on who you ask, and both of those classes can solo stuff that would be suicide for a druid. Mages and necros are also both more wanted in a group- at least for DPS. Druids have decent DPS, and also add considerable other utility to a group, but can't touch a mage or necro for DPS. Also for groups, there are just so many druids out there that there just aren't going to be as many spots available as there are druids who want to group.
So again, why make a druid? Just ports? Wizards can port, can solo, and also beat druids in group DPS. So why not wiz?
That's just it- it's not any one thing that makes druids so popular to play, but a combination of all of them. SoW, ports, ability to solo, usefulness in a group, good at farming stuff, good at power-leveling others. Really, the only thing druids are best at is getting from one place to another, and not really by a whole lot over wizards.
Being a druid is just plain convenient.