The great thing about being chip leader is that you can decide what to do and not feel pressured into going into big pots in order to build up your stack.
Trying to bully everyone all the time will mean that you're eventually going to get beaten in an all-in situation, and the last thing you want is to go all in and lose.
Also since it's the last table, anyone with a decent stack (compared to the size of the big blind) stands a good chance of winning. The short stack can become chip leader after just two all-ins, and the old chip leader could be crippled in that time, I've seen it happen.
The most important thing in poker, especially when chip leader, is to be feared, respected and not obvious in your play. Pushing everyone around every hand means you're now predictable, pick your moments. If you think your opponents have rubbish, push them off the hand. You can afford to play the man not the cards. But if you're betting big and one of the small stacks is calling you all the way he must have something good, those are the hands you can throw away. He's hoping you'll try and protect your hand and take you down a peg for your arrogance.
Bullying people like you described is actually a very good strategy, if done effectively. But you must realise that it's primarily for stealing the blinds. If you've a reputation now as a bully, you won't get called without some decent cards. Always remember that some hands are just unwinnable.
Play it cool, mix it up and maybe you'll do better next time.