Everyone not wants Real Madrid to win again because it's boring, only Madridistas wants it.
Nah it's not 50/50 chance, it's actually 20/80, 20 for Dortmund and 80 for Real Madrid.
Underestimating a team doesn't always mean bad thing, Real Madrid's players can get a big confident if they underestimate Dortmund. Most people always like to mention winning mentality right? underestimate a team is one thing that can build your confidence and mentality.
Nah it's not 50/50 chance, it's actually 20/80, 20 for Dortmund and 80 for Real Madrid.
Underestimating a team doesn't always mean bad thing, Real Madrid's players can get a big confident if they underestimate Dortmund. Most people always like to mention winning mentality right? underestimate a team is one thing that can build your confidence and mentality.
Yeah there is no way it is a 50/50 chance.
Just look at the odds in the first place.
However would I like to see Dortmund as the champions? Hell yeah!
I indicated that already before and I think people except Real Madrid fans wouldn't also say no to seeing a different champion. Real Madrid have already been dominating the Champions League with 14 titles you know. If Mbappe joins them as well then it is more difficult to beat them out of the tournament. Therefore I hope Dortmund make it this year. 
I am not a fan of the two clubs but I am only a fan of Manchester City players who I hope to be able to achieve the UCL title but see how great Real Madrid get rid of my favorite club who just got a new experience last season.
As a gambler or bettor will certainly expect big and satisfying results to hope to bet on Dortmund's victory and this club can successfully get the title but the reality is sometimes different from the expectations that we think now and it would be better to be more realistic in deciding to bet on more choices safe rather than speculating only with the desires we think.