The purpose of gaming is to experience and immerse oneself in the setting at hand, and that includes having consistent in-game physics.
This is an extraordinarily dangerous statement, and if I was feeling less charitable about your intended meaning, I'd go so far as to say that it's objectively and demonstrably wrong - but even then, you've still inadvertently brought up an important point.
The purpose of gaming is to have fun.
Let me repeat that.
The purpose of gaming is to have fun.
This is The Most Important Thing anybody can know about gaming. 85% of Internet Arguments about D&D are because somebody forgot this.
Gaming is not inherently about killing things and racking up the XPs, but it's one of many means to an end of having fun, which means it's Totally Cool to game like that. A big portion of what I enjoy in gaming falls into the category of "kick in the door, kill the awesome monster, take his awesome loot".
To the best of my knowledge, the
only time it's wrong to have fun is when your fun is coming at the expense of everybody else's fun.
On a related subject, any use of the phrase "roll-playing" is implicitly derogatory to a legitimate gaming style.