For some lurve is a pat on the back for a job well done. I believe it drives those to answer questions they normally wouldn’t and to ask questions they think might get them a GA whether or not they have a real interest in the question. Maybe that last part is a bit harsh. Then there are those who don’t seek lurve but if it comes their way it’s nothing to get upset about. They are probably those who also don’t dole out lurve in heaps.
As for me, I fall somewhere in the middle, and maybe most do. I really don’t care about lurve (as evidenced by being here as long as I have and not mounting any sort of assault on 10,000) and I don’t give it often. Frankly, I get annoyed seeing lurve dished out like Ice Cream. But every know and again it’s nice to get lurve for an answer or a question you are proud of. More important to me are the nice little PM’s expressing thanks for answering a question or for making someone laugh.
I’d vote to do away with lurve for a month and see what happens…..And to your original question, if lurve didn’t exist I think there would be fewer answers and questions but the quality would improve and PM’s would sky rocket.