You have every right to be sick and tired of this but it doesn't make you right. Currently they have a zero chance to win but there are rules set in place by the Dems and Reps that prevent them from competing. If a third party candidate can poll at 15 percent for instance they've surpassed that barrier to entry into a national debate. There are other hurdles too but constantly voting out of fear makes this impossible.

https://www.debates.org/about-cpd/overview/

In addition saying they emerge as if their only goal is to circumvent the election isn't true at all. You can see a list of non affiliated candidates working for people all year at the link below.

https://ballotpedia.org/Current_independent_and_minor_party_federal_and_state_officeholders