[gamblor956]

People who are desperate tend not to be the best test subjects--if there is any indication that the drug isn't work, they're likely to switch to another treatment. This is absolute havok on both safety and efficacy trials, which depend on participants sticking to their regime (whether or not their regime is the tested drug or a placebo). The end result is that the drug ends up taking longer to get to market than it otherwise would, assuming that it can get through the trials.

Yes, it sucks for the people who won't survive until the drug reaches the market, but the overall outcome for society is better.

Also, at the end of the day, taxpayer money is used to pay for most EOL care. The taxpayers have a vested interest in not exposing dying people to expensive and unproven treatments which could make their conditions even worse.