Theological Tuesday: Should Churches Celebrate Pentecost?

The liturgical calendar is the annual cycle of Christian season and holidays starting with Advent and ending at Pentecost. Originally a Catholic design intended to honor the major events of the New Testament, it is something which only some Protestants still follow, usually what are sometimes called “high church” or, more appropriately, “liturgical churches.” These include Lutherans, Anglicans (Episcopalians), Presbyterians, and Methodists. Others don’t honor it particularly at all. So the question is whether they should? Does your church do so? Do you think it’s strange that half (let’s say) of Christians structure their church calendars this way and half do not?

Resources:
Liturgical Calendar (Wikipedia)
Pentecost (Wikipedia)
Why some churches do and don’t celebrate Pentecost (CP)
Presbyterian sacred time (Patheos)