If I were shipwrecked on an island, I would want a Rolex over a grand complication Patek Philippe. A Ferrari is not going to be as reliable as a Toyota (although Ferrari would argue a Ferrari would be more reliable than a Toyota when both are driven extremely aggressively). Anything extremely complex is going to be expensive and also less reliable as something relatively simple. But it depends on what you value. If you want something that is exquisitely made, probably unreliable, a status symbol, and aesthetically beautiful; buy a top-tier high horology watch. If you want something industrially made, mostly reliable, less of a status symbol, then buy an Omega/Rolex. There are many people who don't value cars and drive extremely ordinary cars. But value other things - I met a Stanford professor who was very financially successful - wore the finest clothes made with wools milled in Napoli, Italy; Lange timepieces, but drove an 10+ year old ordinary automobile. This is very normal. Almost everyone has their "normal moment" and everyone has their "special moment."
I've never had a major problem with my Pateks - except a bracelet screw that wouldn't come out of my Nautilus that had to be sent back to the service center when the watch was brand new. And ironically, my Chopard Alpine Eagle runs very inaccurately at times. Some days it can be around two dozen seconds fast!