You are nearly there with your argument - except when you mention restrictions placed on you by your race.
There are none in law. In fact there are "affirmative action" type laws to promote access to education and employment opportunities for minorities, including black people. I'm not sure what restrictions you are referring to, but they are probably along the lines of informal racism rather than any legal impediments?
But, people are allowed to be stupid and hold crazy beliefs like racism. You are entitled to hate them right back if you want to, as long as neither of you violates the other's rights. And no, hurt feelings do not count. Defence of free speech is not the same as defence of popular speech.
But you are right - if no-one discriminates, there is no problem!
No analogy is perfect.
Yes, I was mainly referring to the informal- but often institutionalized- racism faced by blacks. IOW, while it isn't law, it may well have the force of the state behind it, so it functions as if it were. It isn't an explicit law on the books, but it is no accident that Federal investigators found- among other things- black motorists in a traffic stop in Ferguson, Missouri were more than 2x more likely to be searched for contraband than stopped white motorists (11%B vs 5%W) despite being much less likely to actually have contraband (24%B vs 30%W)...all while accounting for 85% of traffic stops. (Ferguson is less than 70% black.)
And remember, it wasn't until 2000 that Alabama formally struck from its books the prohibition of interracial marriage. I would not be surprised to find magistrates in & around "sundown towns" everywhere in the USA acting as if it were still legal to deny that fundamental right to mixed couples.
Even when it is private actors doing the discrimination, informal racism can be crippling: redlining by Century 21 kept blacks out of nicer neighborhoods, with all that entails. Inability to get a bank loan or a job because of your skin's melanin concentration reduces upward mobility.
White guys carrying real firearms in Texas (relatively) peacefully and openly are covered on the news as "Open Carry Advocates"- meanwhile, a black man carrying a BB gun
he intended to purchase in a WalMart in Ohio gets covered on the news as being "shot dead."
...but let us leave all that aside, and IMPROVE the analogy.
What if I had said,
"You can always sell your business and be free of the restrictions of being a business owner. A person cannot sell his religious beliefs and be free of the restrictions placed on him or her by being of that faith tradition."
And having said so, asked you to reconsider the statements I made earlier in this thread about
Atheists. A deeply held conviction that there is no divine being of any kind is still a belief about the nature of religion.
And Atheists are prevented by the constitutions of several states from holding any kind of public office.
http://americanhumanist.org/HNN/details/2012-05-unelectable-atheists-us-states-that-prohibit-godless
Me? I'm a practicing "cradle" Roman Catholic: most of the religious discrimination I face is like what I face as a black man- informal. And oddly enough, most of it comes from other Christians, such as when, in 1983, my private high-school was told by a Baptist private school that they would no longer be putting us on their schedule because we were Catholics

.