For some users (talk about myself!) reaching 200 rep can mean jolly hard work, and often take up to 2 years to happen because not every user is a "SO-addict" and will daily hunt for "fresh" questions to answer to boost up their rep (Face it, thinking a few hours too long about your own answer on the very same day will mean that you'll be beaten to it by 5 others with identical or even better answers; hence, there will be no longer any point in posting yours as well, "re-inventing the wheel.")
This is why I've thought that the "payment" of rep for downvotes is not unfair per se, but should simply be free for users that are still struggling to reach the "magic 200" mark.
I will summarize again:
Users between 125 rep (lowest possible for downvoting anyway) and 199 rep ought to have the chance to downvote useless or (e. g. in "Unix & Linux") totally non-working and badly tested answers without losing ANY rep, because they're still working hard on reaching their "magic mark."
From 200 rep, rules should remain the same as they are at the moment.
What do you think about it?