yes, it does answer my question, thanks for the insights!
Totally agree that online we find a lot of
complaining. That's why I took advantage of this thread to have input on the matter from a happy person at the company 
Indeed, long flights mean more rest time and also more money since the salary is based on duty time. Doing a go and back to dublin on a row can be pretty tough I guess.
I understand the point of view of an airline to operate a plane at its best to make it profitable but there are examples of airlines making huge profits without operating planes the whole night (no need to name it/them, the goal of this thread is not to do comparaisons but simply providing information).
As you said, nothing is perfect and everything has pros and cons.
Thanks again for your time answering the questions here. Extremly helpful and very much appreciated!