For me, it's not about whether or not I celebrate Christmas and Easter, it's about how I choose to think about those holidays.
I don't usually talk about this, because those who love to argue tend to assume that I condemn those who celebrate in the traditional way, and that could not be further from the truth.
In my mind, Christmas (and Easter) are each two celebrations that have been merged into one, and I have chosen to separate them.
Christmas #1: a wintertime festival involving Santa, reindeer, sleigh bells, etc. A time to celebrate all that is winter. Bring out the hot cocoa and gather around the fire with your loved ones. Put up lights and festive decorations. It's a very cheery time.
living in Alaska, where winters are VERY long, this aspect of Christmas is wonderful to me because it combats the literal seasonal depression that many of us face during winter due to lack of sun. Seeing the lights everywhere helps make long winters more bearable.
Christmas #2: a time where we give thanks to our God for loving us enough to send His only Son into our filthy and sinful world. JOY TO THE WORLD! In my mind this is COMPLETELY separate from the "Santa" side f Christmas.
Does this make any sense? In my mind its like celebrating two separate holidays in one day/season.
Same for Easter, except this one I have two separate names for
Easter: springtime festival celebrating life and new growth. Involves the Easter bunny and eggs, etc. I don't care about this at all so I usually just ignore it.
"Resurrection Sunday": this is a very holy day celebrating the resurrection of Christ. My family and I take THIS holiday very seriously and it is a wonderful time of celebration.
So the way I see it, Easter and Resurrection Sunday are on the same day, but I only celebrate Ressurection Sunday.
I hope that made sense. This is just my view, and I don't shove it on anyone. It's just how I mentally process these holidays. I don't make a fuss about whether its right or wrong for Christians to celebrate them, and I've never tried to tell anyone that they shouldn't celebrate in a "traditional" way.
I think what's most important is keeping our eyes on Christ at all times, but that doesn't mean we're not allowed to be joyous and celebrate good things