And therein lies the problem. The infrastructure is designed for a nice family pootle at 8mph with the kids. For that it works fine
But if you're a cyclist wanting to go a bit faster (dare I say it, a "serious" cyclist) then you're far better off on the road
But other road users see cyclists as a homogenous group and that causes the conflict. The issue lies in design of the infrastructure
Nail. Head.
My bike is my primary means of transportation, I use it to go to work, or the shops. When the infrastructure becomes an inconvenience, thats actually a big problem for me.
Part of the run into work is down a fairly wide and busy A-road. On each side of the road there was a wide pavement, which the council has split and designated as a cycle route. The road side half being for cycling, where the bus stops, trees, phone cabinets and railing lie, then by the time you've added side roads and driveways, it's difficult to reach a 10mph average moving speed.
That's fine for a family or for kids out for a bit of fresh air, but it's wholly unfit for the purpose of transportation.