So basically pilots only work for low cast carriers because they are forced too.
Not necessarily, but the majors usually have better pay and conditions. Pilots leave low cost airlines for full service, not nearly as many go the other way.
A 25 year old choosing between QANTAS and Tiger would probably go for QF. Free endorsement, good pay and conditions, variety of long haul or short haul. Even with the long wait for upgrade, overall well ahead.
A 45 year old SAAB 340 skipper may well prefer straight into the right seat of an A320 vs S/O on a B744, home every night vs long trips away, 2-4 years to upgrade vs 10-15. With only 20 years to retirement, will be better off spending most of it in the left hand seat with a low cost rather than in the cheap seats with a major airline.
For many ex Ansett skippers, the chance to come home to the left seat of a jet vs bottom of a new seniority list wouldn't be a difficult choice.
If the positives of low cost flying outweigh the negatives for you, then go for it.