Unfortunately not everyone is quick to accept the kilt, and sometimes family and friends (people that know you and generally accept you...) fall into that unfortunate category. This can be quite unsettling for us kilties as the discovery of the kilt is usually a profound one and it tends to mean something to us (at least it does to me, and I have no Scottish blood; the kilt just resonates with me well).
I myself am in an unfortunate situation. I still live with my parents (I'm young yet and need to earn quite a bit more than I do in order to be able to afford rent), and while my mother is pretty cool with it, my father on the other hand is conservative, and he doesn't like it. I sense he admires 'the stones' I have in order to wear it because when I do wear them he doesn't say much, but often enough will ask me "Are you wearing that?" before he will go into public with me. This led me to not really wear it this summer, and now that it's heading into fall and and getting chilly I'm really feeling it... But I've decided for next year that I'm kilting regardless. The rebel inside is getting very frustrated with this trouser tyranny I've been enduring.