I think all believers face this dilemma at one time or another in their lives, especially as they age and the various physical complications that accompany old age bring on.
Not so much "if God gave you a choice," as it is........do I really want to keep suffering, or do I want to go Home? I believe that from God's perspective, if He still has something for us to do, He will encourage us, strengthen us, and enable us to do what it is He has for us to do.
In reality, this is why many of the Christians I know have Living Wills that state they do not want to be put on Life Support just to be kept around a wee bit longer, and/or have Do Not Resuscitate clauses in their Living Wills.
Anyway............in the end, I ask God to allow me to live as long as He wills me to live, for I do enjoy certain things of this world in spite of the hardships and suffering I endure. Family, Friends, Fishing and Fellowship! The 4-F's of this life.