When do you feel like applying for one? Usually there is either a positive or a negative reason. You may be motivated by something on offer (salary, location, job challenge) or trying to escape from something- a bad boss, bad colleagues, subordinates you cannot handle, bad location, etc.
Your search begins. You apply. This in earlier days involved getting a CV typed by sitting next to someone, later morphed into typing your CV and printing it, and further has changed to emailing it or posting it on a job site.
Then, you wait, with no news until you suddenly get an invitation to an interview. Then you try and figure out what the interviewers want to hear-How you love challenges, you are a quick learner, dynamic, and all the rest. If you speak the truth, you generally stand no chance.
So, if the process encourages deceit, you may have to go with the flow, and once you get hired, revert to your real state, whatever that may be. And get found out, and resume the search, ..for the next job..