I am Turkish and I feel like the culture difference is just too massive to be a member of EU right now. Economically, it would be an nice addition to EU, because Germany and France would very much enjoy the free access to the this huge market, so the current situation reflects that: EU has nice access to Turkish market with the current agreements, but they do not allow Turkey to be a member.
would you say the cultural difference was equally massive 20 years ago, when turkey was much more aligned towards an EU future? I don't think so much has changed in turkey culturally, but a lot has changed politically
No, I still think we were not ready 20 years ago and we still not are. The main problem with the political changes that it stole from the time we could have used to find a middle ground between both cultures and be compatible, but it was spent on nonconstructive things instead. I do not support that Turkish culture should be replaced by European one, but we could have made it work somehow.