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I will always think someone is a fool to not use a cycle lane where available
It's almost as though you haven't read the many reasons given for not using one. Meanwhile, I'll continue to think you foolish for driving instead of cycling.
crosses 3 roads, with the appropriate junctions/crossing points
Who gives way at these crossing points? If it's cyclists there's your answer. Would you expect to give way every 250m while on the road in your motorised vehicle? No, it's inconvenient and as such the cyclist has a similar right to convenience.
Cycle lanes.... a cut out and keep guide.
Fully functioning cyclelane:

Not so fully functioning....:

Favourite fully functional cycle lane:

You just get use to it don't you?
3 road bikes, 2 MTB's. Haven't ridden the road bikes (other than Zwift) for almost 4 years since getting my back badly broken by a driver.
Used to commute upto 40 miles a day (25 minimum) on my fixed gear road bike (with panniers). All weathers. Knocked off twice within a year, but the second time finished my road riding. Very severe injuries, should have been in intensive care, but intensive care came to my in the spinal unit. Blood oxygen was just 70% when not on the gas.
I'll stick to MTB's now. I got back on the MTB about 4 months after the accident (6 weeks flat out on a bed in hospital), and then bought a full susser.
I stay away from roads as much as possible now - too many idiots driving killing machines.
I will always think someone is a fool to not use a cycle lane where available
Only place I've ever been hit by a car when on a bike is on a cycle path. And I do a lot of miles, very few of which are on cycle paths.
I consider the cycle path in question to be dangerous (because of the numerous blind exits from driveways) and inconvenient (because of all of the places you're expected to give way to minor roads and driveways), and yet I do sometimes use it because I cba with the aggression and abuse I very occasionally get for not using it.
I will always think someone is a fool to not use a cycle lane where available
The vast majority of cycle lanes near me are MORE dangerous than the main road. More inconvenient, slower, more hazards like parked cars, potholes etc...
I'll ride where I need to in order to make my journey safe and convenient for me and (amazingly enough) as convenient as possible for any other road users around me. If I can slow down a touch, pull in a bit and wave a truck through, I'll do so. If I can "anticipate" a traffic light by a few seconds to get me out of the way of a junction and the starting grid of cars behind me, I'll do so.
But I will not be told to use a "perfectly good cycle lane" because no driver has the slightest clue about what constitutes a "perfectly good" cycle lane.
I could just as easily shout back at you to go and use the "perfectly good" motorway.
Fully functioning cyclelane
First one's a bit empty!
[edit]actually they all are 😆
I'm a relatively new roadie (first road bike in April, done about 1100 miles). There's a road near me heading out towards Epping where I don't use the cycle lane. The road condition in the lane is terrible and the road is wide enough not to cause delays, so I'm cool with it. I'm alright with people riding how they want when I drive, provided they are considerate of everyone else.
If you've never had a road bike and just an MTB, you won't get how much the road surface makes a difference.