I have a soft spot for them as well. They are only doing what they have been taught/brainwashed to do. And they are just kids.
When they knock on my door I invite them in, get them something to drink, feed them, let them relax, etc. Through the course of our discussion I hope to "plant a seed" with them. With some I can tell that I do, with others not. I encourage them to stop by anytime, to use my computer, watch TV, drive somewhere, or for dinner. I want them to leave my house scratching their heads saying "Damn, Bro. Happy would be a great Bishop". Haaaa haaaa.
I also treat them kindly because in a year or so my son will be deciding if he should serve a mission or not. I am betting he will go. He is not as strong as I was/am. So when he is gone I hope he will run into other "soft hearted" folks like myself, and TWF.
When the flight landed one of the lads thanked me heartily. I shook his hand, looked him on the eye, and said "Don't believe everything you hear about apostates and exmormons, we're not all bad." I wish I could have photographed their faces. The guy across the aisle smiled broadly and gave me a thumbs-up. I wonder if he posts here? :-)
I wish i had been next to you on my flight home from Mexico. Instead, I was next to a family that wouldn't shut up about how great that I had been there doing "the work". All I wanted was to relax for a few hours before getting home and dealing with the family circus, and I couldn't even do that.