Ersatz: yeah, nature has been doing stuff for billions of years, why would we want to replicate it? Well, nature has been making hearts beat for millions of years and we can't make anything as good as a heart (yet), but tell someone who would die without a pacemaker that scientists shouldn't have bothered replicating nature.
Wattage is a power conversion rate, not an amount of energy. You don't produce a certain number of Watts per second, you produce a certain amount of energy (joules or calories). It's like saying "My car can travel at 150km/hr every five seconds!"; it makes no sense.
Yes, this thing will not produce a lot of energy, but it's not a power factory, it's a science experiment. It's lovely that the stars are carrying out this process (well, actually, it would be but they're not - we're doing something that our sun can't), but we can't put a laboratory in the middle of the sun to check out what's going on there anyway.
We're not going to die... er... I mean, crap, we'll all be dead by 5.43am. If you need to pee during the night, don't bother getting up, just go in bed 'cause you'll be dead before you need to clean it up.
We're not going to figure out how the universe works as soon as they turn it on. It's the biggest science experiment in the history of the planet. It will take a while to run and the data set will be mind croggling and take a long time to analyse.