Standard catches look so much more difficult from that view. You can see receivers' routes so much better, you can see how RBs hit or miss holes, you can see how defensive backs and linebackers eye their coverages and make decisions, etc. It's fun/different. With the sideline view you're mostly watching linemen hit eachother and the QB drop back.

Don't have to switch every play to it but it's a nice change of pace for a good chunk of games. Every network should employ it for parts of every game IMO.