We just came home from Norway. We stayed in Oslo, Flam, Bergen, Alesund, Loen, Geiranger, Andalsnes. I think the cruise ship traffic only makes a big difference in Flam and Geirganger...and maybe Alesund. For us it wasn't as much the people getting off the ship as the ship itself. Our first 2 days in Flam we didn't have any cruise ships. The morning we were leaving, two big ships pulled into Flam. Instead of looking at the fjord from the deck of our room, we were looking at a giant cruise ship. When we went into town to catch our ferry, it was bustling. Many many more people than previous days. We could have lived with it, but I was glad we had a quieter town the previous couple of days.
In Geiranger, we had a day with no ships and the next day there were 3 ships in port. One of them, a huge Costa, did a 3 point turn to leave the town. It was interesting, yet scary to watch. He really looked like he was going to hit the shoreline.
Keep in mind that along with cruise ships, there are lots of day tripper busses in Flam and Geiranger. The crowds aren't just from the ships. Late afternoons and evenings are much quieter.
I agree that we all have different travel "tastes." We did one night on the Hurtigruten from Bergen to Alesund. It was pleasant, but we were ready to get off. It just wasn't for us. In fact, when I read Barbara's comment about Norway being "boring" I thought, "Well, that's because you were on a cruise ship." LOL! But I have many friends who love cruises. To each his own.