I can be loaded with 20kg of fruits (a crate or 2 on the handlebar and in bags), I will go slowly of course, but I don't really want to stop at a red light if the road is empty as it's already difficult enough (other drivers usually understand it and don't get mad at it), I'll also sometimes need to ride at the middle of the road, to avoid some holes on the side. Some drivers don't understand this and get crazy, most also don't anticipate things at all, they'll dangerously pass you just to stop 50m further..

I've been also close to be hit by behind 5 times, where the driver noticed me at the very last moment, and once hit on the side (left handlebar and shoulder broken)

Bikes need a status in-between pedestrian and cars, for many reasons, not just mine, environment, security.