Hi Mkemse, don't worry about it mate. I'm an author and I have a number of irons in the fire. There are times I can't write updates to my stories for weeks, and then there are days where I can write heaps.
I don't think anyone is taking offence at what you said. You have a valid point with authors finishing off stories. I agree, but I also know that I have a number of stories I have yet to finish off. I think it's a combination of time, motivation and can-I-be-bothered-right-now-or-not.
I know when I start something I like to finish it if I'm able. I think most of the authors have that in mind when they start a project.
Cheers,
FB