If you want to be up close and personal, then you should have been a Vanguard or grabbed a lightsaber of your own. As it is, you are playing a class with range, extreme damage, and comparatively poor mobility/zoning.
If you want personal victories, go play a single player game. Skyrim is amazing. In multiplayer scenarios, it's only the success of your team that has any tangible result.
When a Sith is rushing down your low-health healer and you bail him out by burying three grav rounds in the enemy's back from 20 yards out, he doesn't think you're a cowardly scrub. You're a guardian angel.
When your tank is holding the line with enemies draped over every inch of his body and you show up and roast the entire enemy squad, he doesn't think you're stealing an "easy triple." You're the one guy who is making him feel useful.
If one of your Sentinels makes a move to pick off a healer, and he's suddenly set upon by a stealthed escort, he's not going to say "Whatever man, don't help - this is my fight." No, when you turn the walls behind those two targets into a bloody canvas, he's going to be thankful, because you were the equalizer (and then some).
To your allies, you are not a coward. You are not a handicapped kill thief. You are the fire support - when the battle lines are drawn, you are the one who is going to push them forward, one grav-round riddled or char-broiled Sith corpse at a time.
To your enemies, you are an angry and vengeful god who can only communicate through high-velocity projectiles and horrific explosions. And the message is very clear:
"Don't you lay a single f*cking dirty Sith finger on my team."
Where do I enlist ?