My friend and I have spent years going to the theatre, ballet, cinema etc but I've never liked musicals and only went to please her. Eventually I told her I didn't like them so after that she'd go to them with another friend. After a couple if years she asked me to go to Les Mis. She'd seen it twice before and assured me that even though I didn't like musicals I'd love Les Mis. What an endless dirge, I had to fight to keep my eyes open. I always thought the first half of any musical was awful but they usually perk up in the second half so you leave thinking it was good! I too gated Cats, a,though the set was impressive. Starlight Express was actually quite enjoyable and the Lion King was fantastic, but both if those are really for children and we'd taken our son as birthday treats.
Love ballet but the same friend and I went to see Sleeping Beauty performed by the Vienna Ballet Company and were stifling giggles all through it. It was very amateurish with the dancers wobbling about and looking as if they might fall over.
At least we were entertained.
And finally don't get me started on some if the stuff at the Royal Shakespeare Theatre in Stratford. We live nearby and used to go regularly to afternoon matinees as they were cheap, but some of the productions were just awful, especially the comedies.
However, I've never actually walked out before the end.