Yep. I have two lines, but the points are very similar to what you're saying here. We don't have any texting on our plan. We use iMessage, send texts as email, etc. Once in a while we receive a text and pay .20 each, but this adds up to less than $5 a month even on heavier months. They used to offer 200 txts for $5 a month, but we said we would add that if we ever paid more than $5 per month average. Ever since iMessage and other options, we pay LESS for texts.
As for things like Wi-Fi hotspot, who cares? I have unlimited data. Unlimited minutes? Don't make me laugh. Do you want some extra rollover minutes? I'll send you a thousand or so. I have about 5,000 in reserve.
We have unlimited on my line and 2GB on my wife's line. If I did even the 4GB plan, we would pay about $50 more per month, which would actually be LESS data for me, even if you count mine as 5GB (before throttling).
I'm not trying to convince anyone of anything, by the way, just pointing out to those of you who think those of us on unlimited are idiots who are throwing away money,
that in some cases Mobile Share would be a TERRIBLE idea.