Given the option to burn pine or burn cottonwood, I'd choose cottonwood. I have more of both lying around than anyone wants. Some pine splits worse than cottonwood and throws pine tar at you along with it.
That being said, I'll burn something else, such as elm, maple, ash, walnut, mulberry, locust, and hackberry. I have plenty of these also.
I can get plenty of hardwoods also but Im just trying to see if pine is worth te time and space it will take up. The one reason Im considering it because I pass multiple houses that have it all cut up for free.not split just firewood length