I'll make it as simple of a response as I can: Paul asks other Christians to pray for him (Eph. 6:19). Other passages describe believers praying for one another (2 Cor. 1:11; Eph. 1:16; Phil. 1:19; 2 Tim. 1:3).
I'm very sorry, but I must ask again. I really think you didn't respond. Does your post mean: It is a good thing, it has value, it is something we should do for each other?
[All the previous caveats and conditions still holding.]