The alternative is a secondary restraint system, as fitted sometimes to the Cessna Aerobat. As structural failure in this type is very unlikely and egress from the door, even with the quick-release hinges, is problematic, you're probably better staying with the aircraft for a forced landing. If you lose control at sufficient height in a C152 to be able to bale out, then LET GO and the a/c should recover. If you're too low for it to recover, then you're not going to get out anyway.