#2 It is impossible to replace Ronaldo

Ronaldo's numbers are well documented at Real Madrid. The club's all-time record goalscorer, as well as in La Liga and the Champions League.
He banged in goals for fun, and incredibly scored 40+ goals in each of the last eight seasons, so it came as a huge disappointment to many Real Madrid fans when it emerged that their idol was departing their club.
Replacing such a figure was always going to be difficult if not downright impossible, as in just nine years, the Portugal record goalscorer set a shadow so large over the Bernabeu that getting out of it was going to be difficult.
The remaining players came out in unison to state that the club would cope well in his absence, and that Real would be better off with his departure, as more emphasis would be placed on team work rather than individuality.
All those have proven to be is merely grandstanding, however, as, without the talismanic presence of Ronaldo, Real Madrid have been shown to be ineffective, and exposed with their soft underbelly.
It is hard to imagine the club going on such a long goalless run with Ronaldo in the fold, while the attack's performance in the game against Viktoria Plzen only further highlighted his impact.
Real Madrid struggled to break down the much inferior opposition, meanwhile, it is in matches like this that Ronaldo boosts his records (not in any way suggesting he is not one of the biggest big game players in history), with clubs like Plzen acting as cannon fodder to feed his immense goal hunger.
It's been four months since Ronaldo departed Real Madrid, but their struggles are making it seem like it has been aeons ago.