Great discussion points above. It's all a bittersweet thing and a two edged sword. For many of us, we cherish solitude in the backcountry, as we feel we are better able to connect with the natural beauty and ambience that surrounds us without the intrusion and distraction of others. There's a certain peace that can't be experienced when other people are present. I'm certainly one of those people who enjoy the feeling of being the only person in an area of serene beauty, whether it's by myself, or be shared with great friends and company I've group with. There are spots where you want to capture your own photo without anyone else in the way and with some areas it can take a long wait or an early am arrival to get such a shot. There's also times where you may seek a specific backcountry campsite with an unbeatable view or other natural feature only to be disappointed to find it already taken upon arrival. So there are certainly a lot of benefits to visiting places free of crowds.
However, I must agree that the more people experience and cherish these precious lands, the more power there is to save them and preserve them. At the same time, as has been said above, with the good people who care about being good stewards come a few bad apples who either don't take the time to learn and practice proper LNT techniques, or just plain don't care and trash every area they settle into. I still can't wrap my mind around the fact that there are people out there who value the experience of a certain area to put in the work to get there, only to trash it and have no courtesy for others after them.
We have the Internet and social media sites and platforms such as Instagram, YouTube, and even all the marvelous trip reports and photos we enjoy here on BCP to credit for the influx of traffic into areas that were recently "off the map" and relatively crowd free. At the same time, I'm very thankful for these platforms as we all benefit from being able to discover new places to visit and build our bucket lists. It's give and take.
Anyhow, I much rather be sharing any given area of pristine beauty and wonder, be it in the frontcountry or the backcountry, than not having such land at all. There are many areas now where you just have to accept and tolerate that you will have to share with others almost every time and that they have all the same rights to be there as you do. Other times you will get lucky and hit a very popular area with few to none others present. And yet, we can be thankful that there are still many areas full of their own unique beauty, where at least for now, you only need to hike off the road for a couple miles and feel like you have the whole world to yourself. I think we are lucky in Utah in that the number of national parks and ski resorts that get the most publicity serve as great magnets for the bulk of the crowds seeking a recreational adventure, and with few other exceptions, it doesn't take too much effort to get a few miles off the main roads accessing the national forests, monuments, and wilderness areas to obtain some solitude and have that one-on-one unadulterated wilderness experience. In other words, I'm fine with the parks getting all the crowds. Living nearby, you can go experience them with solitude in the off-season, and then hit all the other great Utah treasures elsewhere.