Elio and I talked once about how strange it was to suddenly be an outsider in our favorite fandom.
Same thing happened when RDM's Nu-Battlestar Galactica came around. Some people in the TOS camp couldn't handle it. I compromised by loving both shows.
Same with GoT/ASoIaF - both have their good points and bad - and to some limited extent, it could be argued that GoT is
a kind of re-imagining of GRRM's original work - it would have to be in order to fit the show into 10 one-hour segments per season. Both are enjoyable on their own merits and both have their problems. To expect anything else is unrealistic and opens one up to eternal disappointment and unhappiness about the subject matter.
To those purists who strongly adhere to the written word and claim that the show is a worthless bastardization of the original, I say, "Don't be a Languatron!"