I'm a tent guy. There are many good points already stated.
How do you normally sleep? Do you wake up at the slightest noise or discomfort, or can you sleep on a pile of rocks through a three alarm fire? Years ago, I used to be able to sleep through anything. Unfortunately, these days I never sleep that great, even in my cushy bed at home. One time camping bivy style, I woke up in the middle of the night with something moving around at the foot of my sleeping bag. We both freaked out and a mouse came rushing out, crawling right over my neck. Yikes. That's something you don't forget, or ever want to experience again. A tent gives me the best chance of getting some rest for the task at hand the next day.
Where will you be camping? I've only done a few of the "pack in" 14ers, but I've noticed a disturbing trend. These places are so popular that the critters, both big and small, have become used to humans, have no fear and come right up close and personal. For Kit Carson I've had mice come right next to me looking for crumbs while I was cooking breakfast. (see above mouse comment) At SCL (Crestones) the bighorns surrounded me in camp licking their chops over the salty soup I was eating. In remote backcountry camps the critters are afraid of humans and keep their distance.
How big of a guy are you? No one seems to ever mention this, but the overall weight you carry is relative to your own weight. Are you 150 lbs or 200 lbs.? I'm pretty average, a little over 175lbs. I notice when I haul more than 25% of my body weight (44 lbs) it gets uncomfortable. I can still do it, but I'd rather not. What are your strongest physical attributes? Ex: I have broad strong shoulders and strong legs. I seem to be built for backpacking, which allows me to haul in excess of 50 lbs on those dry backpacks when you have to carry a lot of excess water weight. On the other hand, my arms are thin and are anything but 'guns'. I could never do pull-ups or moves climbing rock that require great arm strength. I have noticed that guys I've gone backpacking with that prefer the lightweight approach tend to be smaller guys. Make sense. Gear weighs the same whether you are big and burly or short and lightweight.
Cool Hand Luke wrote: My first trip there I carried a one-person tent and my buddy, who will remain unnamed, only carried a bivy. An hour and a half into the storm I hear "hey , dude, is there room in your tent for both of us to sit?"
Funny but true. Lightweight style guys always seems to mooch my stuff, be it stove/fuel, better food, alcohol, or camp comfort items, such as a rain tarp or backpacking chair.
Speaking of a backpacking chair, that was one of the criteria for the purchase of a tent. It had to have enough head room where I could sit upright in it, waiting out long storms. I went with the Big Agnes Copper Spur 2. It is supposed to be a two man tent but there is no way. Maybe a one man one woman tent, but not two dudes. It is roomy for one and allows you to keep busy during storms organizing gear for the following day, drying things out or cooking meals in the vestibule. All while sitting comfortably in my chair! I know a lot of folks will give me crap for such an indulgence, but this goes back to the physical attribute comment above. Although my upper back is strong, my lower back has had some issues through the years, and the chair allows it to relax and get some rest. Also my knees don't bend like they used to, and there is no way in hell I can sit upright with my legs crossed for more than a few minutes, I need back support for long periods of idle sitting.
DArcyS wrote: If you're interested in expeditions or climbing 14ers in the winter, carrying a heavier pack will give you additional training or at least get you use to the idea of carrying something heavy on your back.
+1
I've seen otherwise strong (but lightweight style) hikers wilt and drag when they have to carry a pack with substantial weight, as in winter. Nothing wrong with keeping in condition to haul some weight when you have to.
So, I'm not exactly the poster child for GoLite, but I like to be prepared, and as you age you seem to require a bit more comfort. Ok ... all you lightweight style guys can get out your pitchforks now ...