First, Maundy Thursday has become established as one of the "Holy Days" in much of the Christian world throughout the ages. "Maundy" is an old word signifying "commandment," and "Thursday".... you know, that's the fifth day of the week. So, "commandment Thursday"? Yes. According to the Scriptures, it was around the table of the Passover Feast, the Thursday before the day of resurrection, that Jesus washed his disciples' feet and gave them this prime directive: "A new command I give you: Love one another. As I have loved you, so you must love one another." John 13:34
Second, you should care because the brightness of Easter morning is more clearly seen set against the dark backdrop of betrayal and suffering Jesus first endured. The joy of an empty tomb and risen Lord is more intense after the contemplation of death and loss. Like a Lenten fast and disciplined denial, Maundy Thursday offers an occasion to glimpse the depth of sacrificial love we believe the Lord reveals in his willing descent. We also remember the love he has called us to demonstrate, as his disciples.