Things go wrong when you travel. The most important thing is always safety, and while it’s frustrating when there are mechanical delays or flight diversions I’d always prefer to take the delay than push forward.
I wish that airlines did a better job communicating when things go wrong. However it’s often a game of telephone with two cups and a string. There’s uncertainty about the situation, about the plan to fix it, and between plenty of moving pieces — actually fixing the plane, what alternatives are available, and this all takes time to sort through.