The veteran striker signed a new 12-month deal last month, though has been linked with a summer sale.
But he insists: "I simply seized my opportunity and I repaid the faith that the manager had shown in me.
"That's why the club ultimately offered me the chance to continue my time at Chelsea and I accepted immediately because I like it here. I want to keep winning trophies and I want to continue to show the manager that he can count on me.
"Plus, with the whole coronavirus lockdown situation, I didn't really feel comfortable with the idea of moving abroad and uprooting my family. I think a lot about our quality of life and we have a great setup here. I think a lot about my family now."