Picking up on Jeanette's comment, yes, biking bears risk, but it's about how you do it. However, you MUST wear proper gear. Proper protective gear, gloves and boots. Always wear a full face helmet, open face ones aren't safe enough. You also must have a sense of self control, or you'll find yourself riding faster and faster. If you don't have this, take a bus instead.
A salutary tale. About fifteen years ago I was riding into London on a hot day, a bit warm in trad biking leathers. Going round a corner I hit a big splash of diesel, the back wheel slipped wide then gripped, flicking me off - a 'high side'. I cartwheeled down the road, bashing my head, shoulders and toes, all pretty hard. I stopped bouncing, stood up and surveyed the mess. I was a bit sore, but absolutely fine. Had I been wearing normal street clothes I'd have been hospitalised with broken bones and skin grafts. As it was, I was back on the bike in two days.
Modern synthetic kit is excellent, and less sweaty than leathers.
If you want to ride a bike, give it a go. Everything in life involves risk, it's all about how you manage it, and the rewards from biking are immense.