Henceforth, I am no longer "single" or "unmarried." I am a "bachelor". The other two sound dull, and sad, and lonely not because it is true, but because our culture designates the solo female as such. The implication is that one should be something Other Than single or unmarried.
The Bachelor, on the other hand: fun! independent! whee! A bachelor chooses the bachelor lifestyle, which is a lifestyle envied by her married friends. A bachelor goes on vacations to places that aren't designated "Family Friendly," and hence are not overrun with screaming children. A bachelor spends her disposable income on whatever she wants to.* A bachelor never has to eat at Chuck E. Cheese. A bachelor never finds man-whiskers in her sink, or tube socks in her living room. A bachelor doesn't let a man leave his masculine products in her bathroom, because that would be too much like a commitment.
No, don't even think "ette". EFF the term "bachelorette", because that brings to mind bachelorette parties, which only take place when said female is about to give up her fun-loving lifestyle for the tedium of monogamy and lawn care.
*Alas, the female bachelor, operating at a 30% deficit on the male dollar, has substantially less disposable income, but let us pass over this little detail for the time being.
That is all.