No doubt about it - there are cruisers
and non-cruisers. And I was going to post "Where did this thread come from?!", but here we are.
I'm sorta like Denali ... I don't like crowds and being cooped up. To avoid crowds, I go overseas mostly in shoulder; I'm up early in the morning to go to the most popular sights to avoid (as much as possible) the queues and if its a cruise boat destination, I even check to see if I can avoid those days, or at least again, go early before the cruisers land.
But I don't think cruisers need to defend their position ... its an immensely popular way to go and not everyone has the outlook of an old curmudgeon like me ...
Oh, one experience I had with a large cruiser. A travel agent I got to know in the USA e-mailed me, saying she had some clients on a cruise which was arriving at Burnie, NW Tas, IIRC. She sent me the list of shore excursions, asking which ones I would recommend. Bloom'n heck! The cost of them!!! I can't remember the amount now, but thought at the time that it was 3 to 4 times what I would expect to pay. I told that to the TA who replied, in as many words 'Yup, that's what it is ...' Doesn't appear to deter them, it seems. Here in Tas we have been getting record numbers of cruise ship arrivals, year after year.