Out of curiosity, why would a store bought beer never be the best beer you’ve ever had?
I brew beer to suit my own tastes and no one else's. To me, that's the whole point of brewing. To get what I want. If some corporation makes a certain type of beer perfectly well, and I'm not determined to have beer that's exactly what I want, I think I should go to the store and buy their beer instead of spending money and working hard to make something identical or not as good. I don't see any point in struggling to make Warsteiner or Murphy's if I can buy them.
Back when I quit brewing, I was making things I liked better than anything I could find in stores. That was my goal, and it worked. You probably know how that is. It's the same way with food. When you get a recipe exactly the way you like it, you may never be satisfied with the same dish in a restaurant. I've paid for a lot of good pizza, but for my tastes, none of it comes close to what I make for myself. If I buy pizza, it means I don't feel like cooking and I'm willing to compromise.
I tried a lot of beers after that, but I can't say I liked any of them as much as what I had made. It discouraged me from drinking beer. I still drank beer, but I drank a lot less.
When I wrote, "best beer I've ever had," I wasn't trying to be perfectly correct. I meant Rasputin may be the beer I LIKE the most. I'm sure that over the years, there have been times when I've said my beers were better than anything I had bought, but if I did, I didn't really mean they were objectively better than every other beer. That wouldn't make any sense. I meant I liked them better.