In fairness to Richard, he wasn't only King of England, but also half of France, which was generally in much greater need of personal attention from the king to both put down internal rebellions and see of the machinations of Phillip Augustus. He probably had a greater personal attatchment to his French territories, but I wouldn't say he disregarded England - just that a ruler has a limited amount of time and attention to give, and he generally left fairly competent and reliable representatives in England
True, although technically he was only a duke of France. And the French lands were more important.
But then there is the taxes, must have gone something along the lines of
"I need money to crusade bro"
"Why?"
"So i can go to heaven"
"What about me ill be sent to hell for taxes"
"no comment"
Seriously his crusading was costly. And for all his good work crusading he still got 33 years in purgatory.