Well that would be an inconvenience because I and many others go to work and ride public transport every day. Which is why we don't see TSA checkpoints everywhere; it would be too inconvenient.

People fly infrequently though, and also have a very strong desire to feel safe when flying, so they are for the most part fine with TSA checkpoints. TSA checkpoints are implemented to make people feel safe.

See, it's a balance.