No offence man but unless you're into crawlers and going 5mph that's not getting the job done. Can you put a 4wd MT with tires in soft snow and get it to move? Sure... do I call that driving? No...

If that's what you like to do then great for you. I think the majority of us would prefer to get from one side of the yard to the other in less than 30 minutes (assuming a yard of approximately 60' wide).