Thanks for sharing your thoughts, Min!

Here are some corrections:

I'm not sure when handicapped people should get priorities but, I think they might get some priorities with welfare and medical care.
>>I'm not sure when handicapped people should get priorities but I think they might get some privileges for their welfare and medical care.

They can buy things cheaper than normal people for example, buying cars.
>>They can be give discounts when buying things such as cars.

Thus, they pay electricity bill, water bills and other bills like we do but to help them, government decided to let them pay less.
>>They pay electric bills, water bills, and other bills like we do but the government should help them to pay less.

Not only about money problems, they get merits for medical health care too.
>>They need not only financial assistance but also health care assistance

Like these, handicapped people can get merits but the reality is, we are still discriminating against those people.
>>In these situations, handicapped people can get merits but the reality is, we are still discriminating them.