I often walk to work and by far the most annoying thing I repeatedly encounter are inconsiderate pavement cyclists. Generally blokes in the 30s & 40s who should really know better, cycling at speed on the pavements with no thought to the pedestrians who have the right to be there.
In the last couple of months I've been knocked quite hard once, brushed past frequently (which is a little unnerving when they're coming at speed from behind and you're not aware), shouted at for not squeezing into a wet hedge to give one of them room to pass and cut up by them riding round and in front of me at crossings and turns. It's exactly the same kind of selfish, inconsiderate behaviour that is ranted about when car drivers do it to cyclists, the only difference being the severity of the potential injuries.
"I do not want to be endangered by cars so I will go on the pavement and endanger some other poor sod" does not seem like a good attitude to me.
I also cycle the route fairly regularly and for most of the 3 miles there is no reason or excuse to be on the pavement, the roads are wide, well lit, reasonably well maintained and mostly straight, even when busy there's little problem. There are two junctions which can be tricky / dangerous, both are easily negotiated, if necessary, with the assistance of pedestrian crossings. On the occasions when I have needed to do this I have walked and it added about 60 seconds to my journey time.
I don't really object to cyclists using the pavement, but they must remember that pavements are for pedestrians, they should travel at a reasonable speed and at all times give way to pedestrians, if this becomes difficult they should dismount or get back on the road where they belong.