This is the kind of heavy question that really forces you to weigh your professional ambition against the bedrock of your personal happiness. Personally, I struggle to see a career milestone as worth the pain of leaving behind a partner and a pet, as those connections provide the emotional stability that makes success actually feel meaningful when you finally achieve it. If you choose the scholarship, you risk finding yourself at the top of a ladder only to realize you have no one to share that view with, and that void can be incredibly difficult to fill. That said, some people find that fresh starts are exactly what they need to evolve, so it really comes down to whether your current situation is a source of growth or a comfort zone you are ready to outgrow. Ultimately, I would lean toward staying because life is fragile and professional breakthroughs can often be found later, but the time you have with the people and creatures you love is truly finite.