It probably wasn't the best life that he lived and he knew that majority - if not all - his friends were purely superficial and stuck around for how he made their families look good, but there was something so satisfying about being the top wizard.
He didn't care if he only cemented people's opinions on him, his family and Slytherins in general; it didn't bother him because he got to be powerful and people feared him and it felt great.
Name calling, jinxes, curses and hexes all played a part in his bully pack. Crabbe and Goyle were always helpful to provide brute force and even Pansy Parkinson had a part to play - being the overall bitch that could get other girls to become paranoid and upset and cry with Moaning Myrtle in the bathroom.
Draco Malfoy would continuously enjoy walking down the halls, causing second years to trip over or silently breaking a first year's bag with a silent diffindo. What he enjoyed most was getting that Mudblood Granger or Neville Longbottom in some way or another but the former was always harder to corner, since she had Potter and Weasel as back-up. The latter was much easier since he caused trouble for himself, all Draco had to do was smile at the boy and he'd cause some problem or injury.
Draco Malfoy loved being the bully. Even though he knew it would come back and bite him in the arse.
Chocolate Frog Card: Merwyn the Malicious (bronze) - Incorporate a bully into your story.