Are you serious? More efficient miners are going to be pushed out of the market by a few guys running miners on old laptops at a loss?
Honestly, Theymos; do you make up b.s. for fun?
A few people won't hurt, but lots of people will. It's a bad trend. I want to discourage it before efficient miners are pushed out of the market by huge pools of inefficient miners, which I consider entirely possible.
Why do you think this isn't likely?
Economics. The altruistic motive to help defend the blockchain, in a crisis or otherwise, cannot continue beyond the willingness or resources of the altruistic individual. Excepting such a crisis, the userbase willing to mine at an ongoing loss is always going to be a vanishingly small percentage.