fighting in allahs cause is ordained for you whereas it is disliked by you and it is possible that you hate a thing which is better for you and it is possible that you like a thing which is bad for you and allah knows and you do not know.
كتب عليكم القتال وهو كره لكم وعسى أن تكرهوا شيئا وهو خير لكم وعسى أن تحبوا شيئا وهو شر لكم والله يعلم وأنتم لا تعلمون