convenient usage while using ssh config

It is boring to prompt always ssh -p port user@host while facing frequently SSH request, in this kind of situation, ssh config file could be a better assistance.

host      master    #host for short indication, this name is used in prompt
hostname  192.168.1.100   #hostname for real connection, it can be ip address or domain name
user      rugal     #user name for logging
port      3306      #port in logging
identityfile  ~/.ssh/identity   #private key file in logging procedure

after this configuration, you can just ssh request as ssh master
To connect like ssh -p3306 -i ~/.ssh/identity rugal@192.168.1.100
Don’t you think that is a better way?