Complacent is the state of being satisfied with how things are and not wanting to change them.
com·pla·cent adjective kəm-ˈplā-sənt

Marked by self-satisfaction especially when accompanied by unawareness of actual dangers or deficiencies : marked by complacency : self-satisfied <a complacent smile or response>

Showing no interest in the issues or discussions which concerns another or change. 

:lacking conviction : halfhearted <gave them only lukewarm support>