Don't apologise. Cycling is supposed to be enjoyable and I for one think forcing yourself to ride unneccessarily in conditions you don't enjoy is counterproductive and contrary to the ethos of cycling. All the people that try to portray taking the car or alternative travel arrangement when it is hissing down as wimpish, weak or spineless need a good slap. I say this even though I am one of those nutters that will cycle commute even if I know there is a good chance I will get drenched on the return journey, but I won't set off in miserable, torrential rain when I have a perfectly good car that will get me there dry and in comfort and traffic isn't a problem at the times I commute.
I have to admit, even if I do get a good soaking I don't usually find it too unpleasant (but sometimes it is) and the knowledge that I can have a hot shower as soon as I get home minimises the misery.