Have you considered the theological cost of an old-earth view?
Dr. Al Mohler, president of one of the world’s largest seminaries, addressed this issue as part of his talk on the age of the earth at a recent Ligonier Conference we attended. If you like to dig into the Word, grab a pen and paper to take notes! Go to the video archives for the conference, then click on Saturday to find Dr. Mohler’s talk. If this topic is of interest to you, then spending an hour watching >the video is definitely worth your time. Otherwise, you can also read a summary here.