iOS (iPod and iPad2) and Android user (Samsung Exhibit II) here. The OP brings up many valid concerns, and asks, as a consumer, how much is one willing to tolerate this? My answer: A very long time, as long as Android phones and plans continue to smoke iPhone on price and provide an "almost iOS" experience. The Exhibit II has Android 2.3.5 installed. T-Mobile charges US$30 per month for 100 minutes of talk, unlimited…
The ipad is good for things I want comfort for (reading, web-browsing, etc.) and they are reasonably price competitive (assuming you get the wifi only version, not a plan), but the android phone is much more versitile (if sometimes annoying to use) and generally cheaper than a tie-in iphone plan.
Plus then you get to use applications for either OS.