Different people simplify their lives in different ways. Myself, I could not afford, neither in terms of time, nor financially, to maintain several bikes as well as I maintain one. After you do it over and over, the swapping of tires becomes a matter of fact - I presume you swap your clothes, in spite of the hassle.
You presume too much...I like my presence to be known long before...and after...I am actually there.
Indeed, having my clothing get up and walk to me in the morning saves time.
Seriously, changing tires is easy, but not as easy as changing socks. I used to have just one bike for a lot of years...I am glad I have options now.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey