Devilinurear
Veteran
I don't know where dude was going with the thread but my interpretation was, why would Bruce care about his Dad's sentiments when they were from a dad in an alternate reality/universe. The movie made it seem as if both Bruce and his father would have felt the same way about either being alive when either could have had differing feelings about the other based on how those timelines played out.
Bruce would care. His parents getting killed is a huge part of his life.
Also it shows (at least to Bruce) that his decision to pursue justice is something he shares with his pops.
I've said in two posts it's not a big problem like the thread starter claimed. That said, the father of the Bruce Wayne who received the letter is dead in that particular timeline. That Bruce Wayne's dad was killed; he never became a ruthless crime fighter who killed people, he died. Flash created a new timeline and interacted with a whole new Thomas Wayne. I personally don't care about the particulars, but it's not nitpicking to point out that the two are unrelated, thus making alternate Thomas Wayne's pride in regular Bruce moot.

So you can't just assume that things would go exactly the same, or that people would have the same personalities in each timeline. The Thomas Wayne that died in the original timeline and the Thomas Wayne that becomes Batman in the alternate timeline are two different people. The letter is written out of sentiment that atleast a version of his deceased son can know what a version of his dad felt about him. The letter is received by the original timeline's Bruce Wayne with the same sentiment, despite it not being his real dad.