Each link in the circuit's chain has a certain maximum rating. Most household wiring is only rated for 15 or 20 amp service. Thus the matching breaker ratings. You can add more circuits to the panel, but you can't increase the breaker rating, with the exception being you have 20 amp wire hooked to a 15 amp breaker. In that case you could safely up the breaker to 20 amps. That scenario is unlikely however. The 100-200 amp breakers are generally the house main service breakers. A home only get's a 100 (older) or 200 (newer) amp service, depending on your house mains and power company setup. Apartments may have even less. I've never checked. At any rate, messing with another persons building electrical system is a sure way to be sued, evicted, or at least poorly liked. In the event something bad (fire, death) should happen because of your actions, you could find yourself in very deep shit! Outside of all that is the not insignificant chance of you electrocuting yourself while messing with high amperage household mains.

Bottom line, don't mess with it....