Hello there, and welcome back!
The bad news is that, with the arrival and expansions of Abyssea, every server (AFAIK) is experiencing a lower than usual number of folks PLAYING lower-level jobs lately. This is essentially because Abyssea is crack; most folks with a higher-level job want to do that instead of level their newer jobs.
The good news is that, with the advent of FOV and Level Sync, those who ARE playing lower-level jobs can make full parties much more easily with the limited numbers.
Also, there are a few oddballs among the veteran players, like me, who play a lot of lower and medium-level jobs despite Abyssea being out there. (I find Abyssea not so much "fun" as "hugely rewarding for xp," if that makes sense. I've had more fun leveling my little Taru PLD from 1-37 in the past two months than getting quick xp and merits in Abyssea.)
The key is finding a good linkshell. Consider visiting cynosure-online.com, for one option. If we aren't for you, then I can think of at least two others to try where you will get the support you need.
____________________________Grommet Taru male San d'Orian
95 WHM, BLM, RNG, SMN, WAR/ 64SAM/ 52DRK/ 51PLD, THF/ 49NIN, SCH, RDM, DNC
100 Woodworking and Fishing; 80 Synergy
60 in all other crafts
(Updated November 12, 2011)