He did, however, give us a new feast to observe until His return and that is the Lord's Supper. Don't confuse this with the Passover from the OT, because they are not the same.
Just to get my opinion out of the way since most of you won't agree anyway, Jesus told His disciples and they continued teaching the early church to partake of bread and wine but there was a deadline for this observance which I believe has long since passed. This is an excellent example of how "a little leaven leavens the whole lump". Your view on one doctrine can effect many others even to the point of being lost.
1 Corinthians 11:26 For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come.
I think it's interesting that the first verse in that chapter is Paul instructing his followers to:
1Co 11:1 Be imitators of me, even as I also am of Christ.
What is the deadline you're talking about?