After being really curious and doing some online research, I personally believe it is likely that plants feel some type of "pain" though not in necessarily the same sense of the pain animals feel. Probably closer to what an oyster goes through when someone kills it. It does depend on how you define pain, though. Plants are fascinating organisms..I wish people wouldn't dismiss thier potential so quickly.
But anywho...I still eat them. And after some discussions with people my new responce is that yes, its possible they feel pain. But:
A) I don't believe its possible to torture a plant the same way you can torture an animal...in order for it to grow into a healthy plant you want to eat-you have to give it everything it needs (ie. sun, water, etc.) They cant go through the same kind of mental, emotional and physical torture animals like chickens, cattle, pigs, etc go through. If you "torture" a plant by denying it water or sunlight..it will get yellow and wilty and icky and you cant eat it.
B) Everything has to take life in order to survive. How its done is important...things like respect and gratitude for the life your taking. I, personally, choose to take the life of plants because its the best alternative to contributing to animal torture (that and meat mostly just grosses me out anyways..and plants are healthier for you) But I still am grateful and respectful for the sacrifice.
C) Like I said before...if they do indeed feel "pain" I dont think its really in the same manner that we do. Its likely more of a "this is not good for my well-being" basic "computer-type" responce then a "Holy mother of God, why?!?"
However, I'm not a fan of the C argument...its the same thing a lot of people used to (and still do) say about animals.