The TSA has a $8 BILLION dollar annual budget. Billion.I think they have done a good job trying to balance the needs of travelers with security concerns ...
Now, you might ask, why don't airliners use the same fire resistent aviation fuel as the military has been using for ages now? Its a fuel that makes just as much power, but has additives so that if it spills during an accident, its very unlikely to catch fire. The only reason is cost.
But what if we took 1/4 of the TSA's budget to subsidize the cost differential and required this at least for all of our domestic airports?
Resources aren't infinite, which means each dollar you give the TSA is a dollar that isn't used elsewhere. That is something I think people forget.