I always hear how your god has a plan, encompassing every person and everything in the entire universe. The Ultimate Perfect Plan (hey, it's gotta be ultimate and perfect if a god devised it, right?). So why would your god even consider altering its Ultimate Perfect Plan on the whims of a puny mortal human? Every shooting star, every bolt of lightning, every boon, every disaster, everything conceivable is part of this plan, yet you would ask to have your god toss its plan aside to alleviate illness, bring rain, win a game, or find you a parking spot close to the door? How arrogant is that?
Or perhaps you believe that your god has already accounted for your prayers in its Ultimate Perfect Plan? If that's so, then what's the purpose of praying? Either what you're praying for is already part of your god's plan, rendering your prayer redundant and useless, or it's not part of your god's plan, again rendering it useless, for why should it change its Ultimate Perfect Plan at your behest?
Hopefully you're starting to realize what science has already confirmed: prayer is useless. It has no measurable effect on things or people. Instead of merely praying for victims of terror or disaster, why not actually DO SOMETHING useful to ease their pain and hardship? Volunteer to help clean up the debris. Donate blood and/or money to the Red Cross. Instead of calling around the prayer chain if someone becomes sick or injured, why not DO SOMETHING useful? Take up a collection to help ease their medical bills. Set up a VOLUNTEER CHAIN to take turns cleaning their home, mowing their yard, doing their dishes.
Here we see the one advantage prayer has: it's easy. Just sit, stand, kneel or lie down, and think or talk to yourself, and feel like you've done a good deed without lifting a finger. Actually doing something to help takes work, it's hard. But as Hamilton Holt said, "Nothing worthwhile comes easily. Work, continuous work and hard work, is the only way to accomplish results that last."