He doesn’t like

The Ponds were what gave the Doctor’s life meaning. All three of them were out there, safe and happy, while he gallivanted through space and time. All three of them would be there when he came for them.

That’s why the Doctor continued to travel with the Ponds, and refused to admit that, if they didn’t stop traveling, either they or he would lose the other. The inevitability of death was something the Doctor used to understand, and sometimes even accept. But the Eleventh’s attachment to his Ponds made him resist the basic fact that an end was coming.