Asking to Give

I must begin this with a caveat. Anyone who knows me also knows that I am a very generous man. That being said what is up with all the stores asking at checkout, " Do you want to round up for the free willy fund?" If you say no, you get the cheapskate look. We are destined to feel guilty because we said no.
I appreciate the fundraising, it is vital. Just stop with the asking me at every store I go in.
I watched two older ladies say yes when I could tell they lived on social security and probably could not afford a dollar. It felt like a con taking advantage of them. Perhaps I am wrong and they could afford it. Their hesitation told me otherwise.
Give to your favorite charity, give of your time.