Self-serving (adjective) – egotistical, caring for your own interests only

 Goran Gajicki

Examples:

The politician’s “new ideas” were merely self-serving compliments meant to extend his own career.

Some say that the banks are self-serving institutions that steal your money.

He doesn’t love you; he’s just a self-serving bastard passing time with you.

Most of us look to fulfil our personal aims; only a saint could be less than self-serving.