I do it for the Dark side Cookies...mmm
Myself- I think about the enjoyment people will get from playing the mod.
I know there will always be people who will not enjoy or have XYZ to grip about - But the over all player base will enjoy your mod.
Just think, one of your waiting to be completed/release mods -might just inspire another person to mod -wither it be kotor games or another game.
I know I was inspired by other peoples' mods to get into modding or at least think- let me see what this is all about.
There is a person waiting to be inspired by your mod- you just need to finish/release.
Now go and inspire others with your mods =)