campy has 12-29 11 speed. miche has a 12-30, and sram has an 11-30

Never use mine. All flat in Houston, and I stay in the small ring all the time. Did the same even when I could average 20 mph for 2.5 hours.

39x11 @ 90rpm is ~25mph on a typical road bike. Plenty of gear for me, too. On my triple bikes, I use the 42T ring a lot (42-12 is about the same as 39-11). The 52T will see use on a few extended downhills or really strong tailwinds (any time I expect to be at 25mph+ for an extended period). I've been experimenting with a compact and 12-25 cassette lately and the 50T ring is plenty big, but as I expected, the lack of overlap between chainrings is really annoying. I'm debating a 48 or 46/34 or 36 crank for that bike since a triple isn't an option (105 5800 groupset). I plan to mainly use it for flatter rides so that will still be enough top end for me and get me a little closer spacing between rings. Having done some steeper stuff with it, I miss my 30-27 low gear!

I like having a 46t big ring for recreational riding. 46-17 is the sweet spot for me, and it's nice to have a couple of single steps up and down from there. At 120 RPM you can go 36 MPH with a 46-12. Do you really need to pedal faster than that?

I generally stop pedaling on downhills when I hit 30-33 MPH anyway and just try to get as small as possible.

I run a 50/34 with a 11/25. Would I see much difference changing out for a 11/28? 11/32 is only for 11 sp correct?

Never, ever have a second thought about getting low enough gears so you can enjoy the cycling you do. Exactly what that is for you, really only you can tell - and you've already gotten good options/advice above. I give no credence to anyone who ever has an opinion that any given person doesn't or shouldn't need low gears. That's nonsense. You can work as hard, go as fast, get as fit with a compact crank, triple, large sprockets, etc.

The only downside to a bike with a very wide range of gears, with very low gears - in other words compact vs. a regular crank and a "wide" cassette vs a "narrow" cassette - is the large jump between the gears. That's significant and should be considered. If you don't need them, don't get them, but if you do, don't hesitate.

Do you ever find yourself missing that one extra gear on bigger hills? That's what you get with a 28. I went from 12-25 to 11-28 on a compact and for me the extra range is quite useful.