My point was simple: We are to love God with "all of your heart, all of your mind, and all of your strength." I won't post the verse, since I'm sure that you know the one.
God is the primary object of all of our love. Nothing else is to be preferred to union with Him.
And of course, it's easy for you Protestants. You believe that all you have to do is make some vague profession of faith in Christ, and you're set for life.
Not so for Catholics. At one moment, the Catholic may be in a state of grace. But at another moment, he may fall into a state of mortal sin. It's uncertain what the future may bring.
Perhaps refusing God's offer to go to Heaven now might mean going to Hell later.