Prepare for a rant...
Basically, I have enough toys that I don't NEED new ones. I love reviewing when I have the time and I do have purchased toys that I review. I don't only review the free ones. Since it's something I enjoy, but I don't always have time to do, I tend to request products less. I also feel there are a LOT of reviewers on this site and I feel it's only fair to allow some others to get some of the goodies as well.
I DO get frustrated when I want to review something and all I can seem to find are batteries... I'm sure I am not the only one that has noticed this. Now, of course there is nothing wrong with waiting. That said, since I DO see that the items can be scarce, I do sometimes try to let others have a chance. It's not due to disinterest that I don't always grab one, I just feel it's only fair to let others who have the time to dedicate have a shot.