Real Madrid became the most successful team in this Champions League, with 14 times winning the title is certainly a very good achievement they did. I think they deserve that especially they never lack players who are very good in every area. Another plus, they have a strong mentality which I don't think other teams have at least for now.
I agree with the word "mentality". This is what other teams can't have right now. For example, like Manchester City, Man City is a big English team. but for European competition, their mentality is not there. Real madrid can always make a comeback in the UCL, it proves they do have a winning mentality.
Not only that, even if people say that history does not count in any single game that is played today that is not exactly true, a soccer player which belongs to Real Madrid will have a slight boost to their mentality just by playing there, after all since so many stars have played there and have made some crazy contributions to the team, then it does not matter how difficult a situation could be they could always find inspiration on their predecessors which overcame a similar situation and make them believe they can do so as well.