Can I cancel my roommate's lease even though he's a fine roommate?
If he's a good roommate, why cancel the lease?
The influence of his hobby on my work is unbearable.
I'm sorry that his hobbies interfere with your life, but he is allowed to live there as he is paying rent too. You can't just throw him out because he annoys you, you need to be more understanding and talk out why he is bothering you so much.
I'm going to do it anyways, he annoys me a lot. Working is more important for me than living with him.
I understand the frustration, but instead you need to talk to him. You can work out a schedule, so his hobby is not disturbing your work time.