Whenever I buy audio equipment I think how many tickets I could get with the money, and sometimes this makes be stop and be sensible.
My son has a tight budget, has a large record collection and a stereo system made up of donations from me and his girlfriend's father. I don't think he paid for any of it. A big part of their social life is about going to gigs, music festivals and travel that always involves music, and is always done on a tight budget. No Taylor Swift, thankfully, for which people pay €1,000's.
I don't think twice about buying tickets. When someone like Jonas Kaufman comes to Covent Garden there is a large contingent coming in from around Europe for the performance. It's always the case with the big stars who are difficult to get to see, and there are people who want to see them wherever they perform.
One of the worst is Radiohead, who hardly ever perform. I've seen them twice. My son about 5 or 6 times, including in Berlin and another time he went with my wife to see them in Tel Aviv. She'd never heard of Radiohead and was completely blown away.
I can imagine that if you live out in the woods and can't get to good live music, a stereo system is pretty vital, and you might use your one ticket to go to Munich HiFi Show. For me stereo is more a back-up system and a toy to fiddle around with. When someone pontificates that a €5,000 cable will transform their musical system and transport them into a new sonic world or realism, I think they should grow up and spend €50 on a ticket for a real musical experience.
Fortunately I just turned 60 and got my free travel pass in London, so I don't have to pay for travel and the good bands come here. There was a memorable performance a few years ago by one of your local bands, the Zurcher Sing Akademie. They were very good. I sat next to the musical director, a very serious chap.