The bad thing about kerosene is that it's smelly and remains oily if spilled. It also burns dirty. It is a good summer and winter fuel. Kerosene is not as flammable other fuels, so will not explode as easily. Butane is available worldwide but may be limited in some areas.
Butane comes in low pressure cartridges.
The advantages of the low pressure cartridges are that they are light, they are good at high altitude and are easy to light. The disadvantages of the low pressure cartridges is that when the cartridge gets low or cold, the the flow is very poor. You must also carry out the empty cartridges. The cost of the cartridges is high and you have to buy special cartridges that fit your stove. Propane is available in the United States and Europe.