Reality vs. Fun

I woke up this morning thinking about this whole idea. Reality getting in the way of fun. It from a Youtube channel I watch called "How to be a Great GM"

What are your thoughts on the matter? Do you think that everything should follow the very laws of physics and the like as we know it, or do you think that these laws can generally be relaxed a little to make for a bit more of an entertaining and enjoyable scene?

The example that the person brought up was shooting an arrow to bounce off something to hit a target. Depending on the time period or maybe even in general an arrow might not have the kinetic energy to do so unlike a bullet which could do this just fine.

I like the idea of relaxing these kinds of rules for the sake of having fun. We get bogged down by enough of these laws in real life as is and people are playing in a setting that may or may not even be possible to begin with. Now I don't think these laws should be relaxed to the point where they make no sense (Unless the setting allows for it) but in a general Earth-like setting, I think things like maybe bouncing an arrow off a wall wouldn't be like dividing by 0.

My DM would usually relax the rules on things so long as it's for something fun or entertaining.
Like letting us use a potion of treeshape to burst out of a monsters stomach.

So long as it wasn't ridiculous. (See arrow that has been modified to put a portable hole into a bag of holding when it hits the target)

I think D&D is fantasy. there was a cartoon of robin hood as a fox where his arrow bounced off of a bunch of things and hit the target. I think for fun and dramatic effect in a fantasy setting, it's good to bend the rules or have some stuff like that going on.