Exhaustive studies have shown that SSDs have an annual failure rate of tenths of one percent, while the AFRs for HDDs can run as high as 4 to 6 percent. Additionally, unlike HDDs with their spinning disks, SSDs have no moving parts. As such, they are able to withstand shocks and vibrations without the risk of data loss. This high reliability means SSDs provide consistence performance. The health of SSDs can be monitored and planned for. It’s this predictable reliability and the absence of mechanical parts that give SSDs a huge advantage over the unpredictable performance and high failure rate of HDDs.
Source:Solid-state drives: Debunking 4 SSD Myths
I have been using SSD's since 2011 and not one of my SSD failed.