Light em Up wrote:This is what Phoebe tells us inside the mine, and Callie also said at one point that he left the family to go to the farm. But if Callie is almost 40 and never knew Egon, then he would have left her a decade before he went to Summerville.
I think you're taking the lines too literally and chronologically.
Callie says, "I think he was a sad old man who turned his back on his family, his partners. And for what? For a stupid farm in a town nobody cares about. Where, by the way, everybody thought he was nuts." Consider what we know, the Ghostbusters was all but shuttered once again in the 90s/maybe early 00s:
- Instead of trying to keep the business afloat we know from Ray that Egon went on less and less calls to study apocalypse myths. He didn't try to help keep Ghostbusters in business=Turned his back on his friends. And leaving with Ecto-1 and a lot of the equipment was the nail in the coffin. We know how much Ray resented it.
-Knowing the Ghostbusters' days were numbered, Egon could have moved to Chicago and been there for teenage Callie and whoever Callie's mom was. He didn't go nor try to initiate contact.
He went to Summerville, where he believed the next apocalypse would eventually be triggered and shut out nearly everyone out of his life in order to 100% focus on stopping it himself.
Is that why he also didn't try previously in 1984 and 1989? Probably. There was a similar bit in the IDW run when faced with Janine's advances over the years, Egon admitted he knew how she felt about him but he was busy with constantly trying to prevent the end of the world as a Ghostbuster. Ok, but what about the 5 year gap? Well, he got lost in his new obsession, proving and researching the psychomagnetheric energy field. A bit of a strength and weakness that Egon has a singular focus once he gets going on something.
Another thing to consider about this is we lack context for one aspect of Callie's past. Was staying out of Callie's life from the start a choice Egon made because of, what you call the excuse of, the apocalypses or did Callie's mom tell him she was pregnant but wanted him to stay out of her life and she was going to raise Callie on her own and Egon agreed to it (but as a scientist, still couldn't help but observe from afar without Callie knowing)? To me it feels like the latter, otherwise why would he bother to keep tabs on her all her life if he was supposedly 100% all in on the paranormal and the end of the world?
Another is how much did Callie's mom tell her about the circumstances of her conception and birth? It feels like she told Callie jack and Callie filled in the gaps by herself with her insecurities thus Callie seemed to have been operating under the false impression that Egon bailed on them and thus we the audience can't accept what she says about that topic as fact.
Phoebe says, "Our grandfather. He was right here. He built this. He was standing guard, even when no one believed him. He sacrificed everything. His life. His friends. Us." Basically what Phoebe is saying is Egon gave up having a normal life and what that could have entailed (9-5 job, hanging out with contemporaries and friends, a standard nuclear family, mending fences with Callie and being a part of her family and having known his grandchildren in life) to stand guard 24/7 for decades, plan and build, and wait for the chance to stop Gozer in 2021.