I don't wear a helmet and it is nothing about my vanity, I usually forget to comb my hair before getting to work .. some of us don't like wearing something for the fact one I have to carry around an extra bit of kit just "in case" and the fact I don't like wearing it .... the fact I look like a bellend is irrelevant ... I look like one anyway.
You know what 'as if' means, I take it.