I've often thought how much I would HATE to be sent loads of stuff that I personally did not carefully pick and choose. I wouldn't care a jot that it's "free". Remember when we used to see FOD doing frequent tip runs with mountains of packaging in the back? Too much "stuff" stresses me out so I'm really choosy about what I let in my house.
On a similar note I also don't want "gifted" work done on my house, I want the clarity of paying for a service and (hopefully!) getting what I pay for. I can't imagine having ridiculous conversations with contractors about how many squares or stories a certain piece of work is worth (though I'd love to overhear some of those negotiations so I can have a good laugh
).