In addition to the valid pros reshanm and ppp23 made, I would like to highlight that in a lot of cases, the patient volunteering to undergo clinical trials does not have to pay much (if any) out for their own pocket. It is true that insurance companies mostly will not pay for these experimental clinical trials, however, the organization itself often times sponsors their ‘test subjects’ and may even compensate them for their time. This sponsorship is due to the high demand for these volunteers because, without them, the clinical trials would not occur which would significantly delay and decrease the chances the new drug candidate ever reaches market. This free of charge care (although not always guaranteed to work) becomes a final hope to many individuals who need lifesaving care yet simply cannot afford the conventional proven drugs on the market. Finally, this means that the biggest hardship for those who want to undergo clinical trials would be the regular commute to the testing facility. Typically these facilities are very specialized centers and patients may have to travel great lengths (at regular testing intervals) to receive this experimental care. This could cause an inconvenience in the patient’s normal work and social life and priorities must be decided upon before such a commitment is made.

https://www.spribrooklyn.com/weighing-potential-pros-cons-participating-clinical-research-trial/