It seems kind of weird to make them do something like that for money...maybe it's just me, but it seems a little off for a charitable donation.
I disagree. I have quite a lot of experience with charities, actually... Long-term unemployed for medical reasons, so I had to rely on several for services. I also volunteered at quite a few over the years (as in, more than three dozen different ones, totaling thousands of hours), and I've even been doing some computer work and website development for two local charities.
The problem is the majority of charities are quite, quite focused on anything that will get them some more money. Some of them because they're keeping the maximum percentage allowed by law, and some just because they really do just want to be able to buy food for more families. I'll tell you, though, the ones who take the PERCENTAGE of donations, and not just taking out their ACTUAL expenses exactly ... frankly, giving to some of those wouldn't possibly make Bitcoin look good. They -WOULD- take bitcoins once-and-just-once. And from then on any time someone asked they'd do this "Oh you know we tried that once and it didn't work out ..." because they'd just want dollars. Faster profit.
And, no, not all charities are like this -- there are five charities in my area where the head honcho is known to be pulling in more money in salary than some of the bank executives around here get, but most have a more "reasonable" $100-200K yearly income ...
But face facts. If Bitcoin users are going to give a huge chunk of money to a charity, and this is being solicited specifically with the topic line "How to make sure Bitcoin will never be banned by governments!" ... If you're donating just to donate, you don't care if they take Bitcoin or not, so mail them dollars. If you only want to donate if the donation is Bitcoin, then yes, you have every reason to say "Yeah, we'll give you the windfall as long as you keep accepting bitcoins, because everyone giving US the money to give to you wants you to accept bitcoins going forward, not just this second."
Attaching strings to donations? No, it's not some bad thing. It happens all the time. In fact, in virtually every case that I get some assistance from a charitable organization there's a condition. And it's often been an extremely rotten and unfair one: several years ago, my home was destroyed by a storm. The only place nearby who would take me in had a condition: change religions. This included the "requirement" that I attend six hours per day of religious classes, and if I missed any I was out -- and they were very clear that if I had to choose between working and taking the classes, either choose the classes or go elsewhere.
To be blunt, if a charity is allowed to attach strings to the help they give out, I see no problem with attaching strings to a donation to them. I mean, hell, all the big donors do it, why do you think they name hospital wings after people in the first place?