Don't worry about it @snowpea, I understand completely how you feel, specially the part you said it hurts your feelings. It happens to me also, but I try not to pay much attention to it, it's hard I know, but I prefer not to get involved too much, and that's easy said than done!
What you said about the ones that depend on you, it's a great insight. I think at the end, it's good to revaluate things in life, and that will always be a healthy exercise. 😃
Just keep doing what you love most and ignore those who don't deserve your attention.