The rules in Australia and the US (I think) forbid the flying of drones whilst wearing
goggles. To me this is a bit like not allowing the flying of helicopters by an onboard pilot, only by a pilot on the ground.
Actually, it's more like trying to do air traffic control from the cockpit of a plane vs. from an air traffic control tower.
Is this a rule which is invariably obeyed by everyone on this forum?
Of course...

In fact I always leave my $500
goggles turned on and lying on the ground next to me when I fly, just in case some stranger comes along and wants to see how cool it is to be flying from the point of view of the drone. Or if any ants are wandering by and they're curious what it's like to be a bird. That's why I spent all that money.
What's the point in having a Mavic that can fly up to 7km away if I can only fly it if I can see it?
In any case, I feel that my flying is a lot safer if I'm wearing
goggles as I can immediately see what is around me.
Actually, it's probably not a lot safer flying with the
goggles, as you have much less awareness of what's going on around you/your drone and you have less context of where/how your Mavic is flying in its surroundings. You can see what's immediately in front of you but not much else when using the
goggles. Not so when flying in VLOS, where you can see under the drone, above it, behind it, etc. You can also see other things off in the distance (like aircraft, trees, etc.) that might pose a threat to you in flight. Technically, when using the
goggles, you should also have a spotter. Technically, you shouldn't be flying your Mavic up to 7 km away from you, as you can't maintain a VLOS. Technically, you shouldn't exceed 400 feet in altitude. How you choose to operate is up to you though.
However, don't fool yourself into believing it's easier/safer flying while using the
goggles than without them. Just understand the limitations and act accordingly.
Safe flying!