To Side or Not To Side

The back of the house is sad! So do we side it or paint it like the front deck?I worked really hard this spring, summer and fall to get about 80% of the house painted and the siding fixed. This monstrous house (and equally intimidating deck) is no small feat! But, the front and both sides are looking tremendously better thanks to some new siding, rocks and fresh paint. That leaves only the back to do and as shown above, it'll be another big undertaking. which begs the question: to side or not...