So what if the guy doesn't want anything from his deity but still goes through the rituals anyway? Are the rituals there just to ask the deities for something in return?
My understanding of Asatru is that faith isn't needed, that if you do the rituals, you reap the rewards. If you give something to the gods without specifying what you want in return, then they'll find something that they think you want and you have no control on it.
Example: A member of my old kindred decided that it was unfair that there wasn't a ritual to Loki specifically, that he only got recognized because he's blood-brother to Odin and if you give to Odin, it's only fair to give to Loki. So we did a Loki blot without specifying anything in return.
The guy who opted to do it and lead the blot suddenly lost the job he'd had for over 20 years (this was 1996, FWIW). One woman's engagement fell apart. Another woman was involved in a 3 car pile-up that made the news that night. My family had a house fire.
All totally Loki-style. But here's where the blessings started in:
The guy looked at his life, finally admitted that he was stuck in a rut in that job, and started a new business. He met a woman and found the love of his life and, last I heard, he'd moved his business and new family out of Michigan and was still doing well.
The formally engaged woman rearranged her life post-non-wedding, and got her career back on track. She got a promotion 4 months later, moved to a different city, and fell in love again.
The friend who was in the car accident wasn't at fault and was one of many in the pile-up. She got enough money from the insurance settlement that she got a new car free and clear. No more clunker with weekly repair bills.
Our housefire pretty much totaled the kitchen and the roof above it, where the fire was. The efforts of the fire department hosed down the rest of the house and tore up the wallboard through half of it, and damaged the furnace. It killed all electronics (including 3 computers), smoke damaged heirlooms and books. Mind you, the fire only "lived" for about 20 minutes before it was put out.
But all the pets were pulled out by the fire department and neighbors got them to the emergency vet. We had very good house insurance, so we got a new roof, the electric completely updated to modern code (including a new fuse-box), the kitchen and bathroom were remodeled so it made sense, as well as getting new appliances, freshly painted, the hardwood floors complete redone throughout, all the computers and electronics updated--shall I go on? All it cost me was to pay for the roof that the fire hadn't damaged--about $2-3K, for roughly $100K worth of repairs and replacements. When it came time to sell the house ten years later, all those updates and improvements went a LONG way to punching up the value of the house.
If you're giving to the gods, make certain you're specific. The gods WILL do something positive back to you, but sometimes it can be pretty nasty before it turns positive.