That's fine, but you can't argue that it isn't wasting time.
Do you also believe that you can catch cold by being outside in the winter without a coat?
Of course I can argue it's not wasting time. If I click a download link and let it do its thing in the background while I go about my other planned activities for the day, what time was wasted? Perhaps it's just semantics, but there's no time wasted as far as I am concerned. If you are in a hurry to apply the update, you could say that it will delay the process by an amount of time as yet to be determined (until you compare download and install times both ways) without an argument by me, but that's not a waste of time.
As far as catching a cold outside without a coat, I generally don't wear a coat in cold weather, but in sunny Southern California, that's hardly an issue to worry about. I don't believe wearing a coat is a factor, but there was an article on Dr. Mirkin's website a while back that reported research was showing that a scarf/muffler over your nose appears to be a factor. The theory is that cold air reduces the movement of virus killing hairs and mucous in your nostrils, allowing a virus to enter your system that would otherwise have been killed in that first line of defense. I'd google the article for you, but since you asked the question as a form of insult, I won't take the time on your behalf.
We can banter the point back and forth all day if you want. But I'll point out that more people have chimed in with there's no disadvantage to this than have on the other side of the issue.
I'll tell you what, I'll say you win the argument here, you are more intelligent than I am, you are probably better looking, make more money, have more experience, have more friends, have more toys, live in a nicer neighborhood, have a sexier girlfriend/boyfriend (whichever you prefer) and are just a generally all around better part of the overall universe than I am, but I have a bigger you know what, and you'll always envy me for it. Fair enough? ;-)