This doesn’t sound like you’re saying you think it’s impractical to practice Utilitarian ethics, but that you disagree with some fundamental tenets. You don’t actually want to maximize total or average happiness of humans, because you de-value humans that don’t share your outlook.
That’s fine, but it’s deeper than just a practical objection.
[ note: not Utilitarian myself ]
This doesn’t sound like you’re saying you think it’s impractical to practice Utilitarian ethics, but that you disagree with some fundamental tenets. You don’t actually want to maximize total or average happiness of humans, because you de-value humans that don’t share your outlook.
That’s fine, but it’s deeper than just a practical objection.