Think of a see-saw at the playground. Put a 50lb kid on one end and a fully grown adult on the other. The adult obviously lifts the kid, right? Put the adult one inch from the center pivot point and guess what, the kid’s weight now lifts the adult.

Think of how long your quads are in relation to the length of your tibia. More or less equal. Now think of your calf’s length in relation to the length of your foot. Its almost twice as long. That’s almost twice the amount of leverage compared to your quads.

This is the difference between the two and why your calves seem so much more capable for their size than your quads.

Leverage.

whose house is it?

If you have a kid, that kid is equally entitled to the space you’ve brought them into. That’s a burden you chose to bear when you chose to see a pregnancy to fruition.

should two consenting aduts adapt…?

Yes, especially in the presence of children. Even if we were talking about roommates instead of kids it should be self-evident that your roommate is not wanting to hear you having sex twice a day. Its a common courtesy to be considerate of others around you.

This feels like malicious compliance to me. If I was your kid, I’d be pissed if you felt entitled to attempting to assert dominance like this.

This is how your kids start resenting you as they grow up. Consider treating them like they’re a part of a family unit that respects boundaries instead of shoving a material possession their way to shut them up. Growing up feeling like an inconvenient burden fucks up a lot of kids in this world.