visitor visa denied

I am a Canadian citizen and I recently sent a letter of invitation for my friend to come to Canada for a visit. Unfotunately it seems our goverment has denied my friend because of financial reasons, and he didn't show enough evidence that he would be returning to his country when his time had expired. I have been reading through the Canadian Immigration sites and I read a lot about how Canada welcomes all to Canada, and I find that to be a load of "BS" I offered in my letter to support my friend shelter, food, water, medical, and paying for his airfare here and back. I would like to know how much money do they expect one to have in order for them to come for a visit when their main necessities are well look after??? How much proof does one need if family and school are not enough for him to return to his country??? My family and I opened our hearts and our home so that we could give our friend the opportunity to see Canada and experience the Canadian culture. Canada says they don't discriminate against people for their race, religion, rich or poor, well I think the Canadian goverment are the biggest hypocrites that ever existed....

Sincerely yours

ASHAMED AND DISGUSTED