As humans, we don't know where we'll need the help of someone. It's our obligation as individuals existing in a society to treat other individuals as 'humans' and not as 'things'. We got to know everyone has blood running through their veins and are full of senses. Even if they may lack any of their five senses, they are still sensitive to emotions.
There are different people found everywhere on the surface of this earth. Every individual is unique in his own way. You can't judge anyone with your own ideas or views, before you can a step forward to talk about someone, take 'steps' backwards then check your life to see if you are 'fit' to talk about this individual. Check to see if your life is worth more this individual you want to talk about.
And don't forget you can't value someone based on your standards but by God's standards.