Discrimination is normal. You select by certain criteria and treat said people differently. No one is going to have a problem with you being nicer to your friends than to a complete stranger, its still discrimination.
None of the discrimination you mention is really very unreasonable though handicapped people usually do get slight advantages in the general scheme of social discrimination. People tend to be nicer to them and are more likely to help them out than anyone else in need of help but I think it goes to a general ingrained discrimination not just based on handicap. People who are more attractive generally are treated better. People who are considered less capable usually receive more help. And people who are considered less of a "threat" are more likely to be engaged and assisted.
Handicapped people are generally considered less capable and so people often try to help them out. There are even plenty of handicapped people who find it annoying and will refuse help sometimes rather bluntly. Handicapped people are also less likely to be considered a threat. The combination of these two things has led many con artists and criminals to use wheel chairs and crutches and the like.
In contrast the other week a friend of mine who is a big guy, ex military, relatively young, with a shaved head (somewhat imposing and definitely "capable" looking) had his car overheat. He got out of his car and looked under the hood. One of the hoses burst and sprayed him. He had first and second degree burns on his arm, it was blistering and painful as all get out. He was capering about the side of the road screaming in pain. He wound up on his knees, doubled over, dry heaving, tears streaming down his face, and trying vainly to wave some down to help him. Not a single person stopped and as far as he knows no one even called the police or anything. He had to get his own shit together, cut and reconnect the hose, fill the car up with some radiator fluid he had in the trunk, and then drive to a gas station to try to get help. And there the guy behind the counter would not even allow him to use the sink to put cool water on his severely burned and blistered arm.
None of the discrimination you mention is really very unreasonable though handicapped people usually do get slight advantages in the general scheme of social discrimination. People tend to be nicer to them and are more likely to help them out than anyone else in need of help but I think it goes to a general ingrained discrimination not just based on handicap. People who are more attractive generally are treated better. People who are considered less capable usually receive more help. And people who are considered less of a "threat" are more likely to be engaged and assisted.
Handicapped people are generally considered less capable and so people often try to help them out. There are even plenty of handicapped people who find it annoying and will refuse help sometimes rather bluntly. Handicapped people are also less likely to be considered a threat. The combination of these two things has led many con artists and criminals to use wheel chairs and crutches and the like.
In contrast the other week a friend of mine who is a big guy, ex military, relatively young, with a shaved head (somewhat imposing and definitely "capable" looking) had his car overheat. He got out of his car and looked under the hood. One of the hoses burst and sprayed him. He had first and second degree burns on his arm, it was blistering and painful as all get out. He was capering about the side of the road screaming in pain. He wound up on his knees, doubled over, dry heaving, tears streaming down his face, and trying vainly to wave some down to help him. Not a single person stopped and as far as he knows no one even called the police or anything. He had to get his own shit together, cut and reconnect the hose, fill the car up with some radiator fluid he had in the trunk, and then drive to a gas station to try to get help. And there the guy behind the counter would not even allow him to use the sink to put cool water on his severely burned and blistered arm.