Fast track -- pay to jump the queue | What money can't buy

In many places it is now possible to pay to skip the suffer of waiting in a long line, when you are in restaurant at a busy night, give some handsome tips and you get a table immediately. Some airports publicly offer fast track through security check, as long as you are willing to pay more. In amusement park, theatre, tourist attractions, wherever you can think of that will be a queue.
Is it morally corrosive? Has market brought it too far that these practices may undermine the idea of equality? Here is what I think:
We make money by investing our time and energy, every penny represents some effort we paid in the past, so that we can purchase goods or services that may reduce our effort in the future. Paying for a fast track is pretty much like a service helps you to spare some energy by paying what you earned, not so unfair, right? I'm not rich, I'm one of those supposedly should complain about the rich people who pay to jump the queue, but I'd actually think, by waiting in the queue I spare some money that they paid for the time saved. All depends on how much you think your time is worthy, especially your time at the very moment, like if you are in emergency, I bet you'd love to pay to get past the security line earlier as well, even if you have always being a sparing person.
Let me know what do you think of fast track? Would you get upset facing some people jumping the queue by giving up more cash? Or would you be one of the people prefer to pay rather than wait? Let me know in the comment.

I'm reading the book what money can't buy