I am torn. I have enjoyed the larger screen real estate since the plus option became available with the 6 series. I chose the 8 Plus over the X due to the screen ratio of the X compared to the 8 Plus. Then, I found I couldn't use the XS Max or 11 Pro Max due to PWM eye strain (entirely different story). So, I was 8 Plus until 2 months ago when I finally moved to the regular 11.
Now that I am used to the smaller size and weight of the 11, I am torn on moving to the 12 Pro Max (if my eyes can tolerate it). I don't bother with tablets, and I rarely ever dust off my MacBook, so having the largest screen is nice since I use my phone for 99% of my needs. Also, the Pro Max will have the best camera available as far as iPhones go and that is very important to me. I am very tall, so putting the Max in my pockets is not an issue nor is using it one handed. Where I think the size will be a compromise are a) phone won't fit in my cupholders b) will really weigh down my gym shorts when I am out doing yard work c) same issue when I go for walks with the dog or just exercise in general.
The only thing I do know is that I have zero interest in the mini, the regular 12, or 12 Pro. If I make a move from my 11, it would be to the Max and I would just get used to having a larger, heavier phone again.