I don't think it's about danger per se, turbulence can be very upsetting. I have myself changed travel plans due to expected bad weather and I've been through my fair share of tubulence - both in large (747) and small (Saab 340, J41 and an 8 pax machine on the edge of a South African thunderstorm).
Further, I never go on ferries as the turbulence they can dole out is far worse! In 50 years, I have never doubted the aircraft would reach it's destination intact - I am not a nervous flyer and love being SLF - but severe turbulence I can do without.