I fear I may be that DM sometimes...

My players do tend to enjoy going roundabout every possible combat encounter and last session they even fled from a monster... It's very hard to motivate them into fighting anything and sometimes I wish they were a bit more heroic and more aggressive in certain aspects, that may be because I really like to run battles.

There was even a moment where my players gave me advice under which circumstances they would fight so I can try to get them into more battles.