I am heterosexual and I definitely see the difference.
... I'm not sure I'm buying this.
Ba careful there mate! In many countries it is illegal to pay a prostitute!
Other technical difficulties like the extremely strong gyroscopic effect should be overcome as well.
... when they find some use for quarks...
In quantum world all particles are in superposition of being both useful and useless. You cannot determine usefulness of a quantum particle without measuring (and destroying as a result) it.