There are many ways to participate in the market without having to ride the Wall Street Roller coaster.
It is important first to identify what "safe" means to the individual and then create a strategy that allows for participation in the market without risking one's financial future.
One can also contractually limit losses through the use of options, contracts, buffers, structured products, and insurance policies. The key is to have a strategy that is designed to help you protect your savings while growing them during times of opportunity.