Mara/sents is PVP classes, they are not that good in PVE mate. Melee dps have always been a weak link in MMORPG and the whole strenght of MARA/Sents lies with PVP. They are just like how Assassins was in GW, pretty mediocre in PVE because they were meant for 1v1 DPS stacking situations in PVP
Also when you get to 50 PVP is pretty much the only thing you can do and when you have played through the game once it's far more fun to level through PVP/Space missions then doing the same sidequests over again. SWTORS problem is that there is not that you go through the same areas each playthrough but that there is too few sidequests.
If they wanted that ppl should do alting then they should have had skipped all VO ffor sidequests and made several sidequests hubs on each planets so you never had to do the same sidequest more then once if you wanted to.
VO for the class stories are awesome but for the sidequests it's pointless.
what game are you playing? Mar/Sent is one of top dps class in all dps parsers in operation bosses. and saying pvp is all u can do at 50 u must not raid or pve do u. master HM EC yet? thot not.