There are several reactions to the 'I don't want to pay taxes' so I'll pick this one and respond. I hope you read the rest of the comment. I don't want to pay taxes because who does? Ever? But we -need- to pay taxes for programs that work because the alternative, massive social costs and damage to society, are far worse. So, sure, I don't want to pay taxes for social programs but I admit the need to and therefore I want the most effective, evidence based programs we can find. We need value for the effort and that involves doing research to figure that value out. If a program like this efficiently reduces the problems associated with homelessness I am all for it.

As to what I would actually want to pay taxes for it is to build new things and achieve new things as a society. I never want to spend money on 'fixing', it is needed, it has to happen, but that doesn't mean I have to like it. Building new things however I am 100% for. Get us to space. Find new particles. Help foster the arts. That is what I want my taxes to go for. So, yes, fund things like this if it is effective because we have to but you won't get me to say I want to spend money one this.

The the whole thing can be summed up as "Paying taxes sucks, but if paying the taxes saves more money down then line, then we should do it"

How much would you have to pay to no longer enjoy the benefit? I think that's the major question.

I wouldn't much mind 1% in income tax for that, for example, but when you start pushing 10% it's an entirely different story.

Social programs are definitionaly nonpublic. That is, they do not provide nonrivalous and nonexcludable benefits.

The proper method to administrate social benefits is via charity. In this way, there is no deadweight loss through unnecessary taxes.