Actually, I fully understand. I do have a car lighter socket charger with a USB jack which I got for one of the old PDAs in my collection. It came with various tips for different PDA models, but the other end is a USB plug.
Oddly enough, just a few days ago I found a portable radio with a crank generator on clearance sale, which happens to have a USB jack for cellphone charging. It includes a cable with adapters for four different phone brands, including the older Nokia standard type. It has an internal DC-DC converter which steps up the 3.6 volt NiMH battery (which is charged by the crank generator) to a measured 6 volts for the phone. Takes a lot of cranking, but it is another option to charge the E61! 😉 Potentially dangerous if an unknowing person plugs a normal 5 volt USB device into it by accident though...
My point is that I am not particularly fond of USB connectors (on the phone end specifically), and wanted to make the point that at least someone does not yet find them to be ubiquitous. Even if they can match the incredible robustness of the standard Nokia plug (though the new mini one might not be quite as much so, which is one reason why I charge the E61 battery externally, to be absolutely sure that the connector does not get damaged; it also does not expose the E61 to the heat of the charging circuitry, potential power surges, etc...perhaps I am paranoid!), the USB connector is still larger. Admittedly, the elimination of the Pop-Port would leave room for one; witness the difference between the E61 and E62. So the E62 doesn't require a Pop-Port to 3.5 mm stereo adapter or a proprietary Pop-Port stereo headset; it instead requires a proprietary 2.5 mm to 3.5 mm adapter, or a different proprietary headset...still not sure about that one.
Interestingly, I knew someone several years ago who bought a Nokia phone specifically because it used a coaxial charger jack, rather than the bizarre multipin contrivances popular on Motorolas, Samsungs, and the like. 😉
Yes, I understand the point of a truly universal charger (and didn't I hear recently that China is mandating just that?). A good idea in many respects; I just happen to like the existing Nokia method. A USB jack would be kind of large on my BT headset...
Now what would be cool would be a universal device charger which could also charge my portable two-way radio equipment, which uses batteries with similar amp-hour capacities to the larger phone batteries, but at twice the voltage. The standard wall charger for those is about 3 times the size and weight of the entire E61! Its output ratings would equate in power to almost 3 USB ports as well... 😉 It could be done, but would obviously take much longer to charge...this is true even of the E61 charging from USB (or some of the lower voltage wall chargers). If the charger were not a PC, it could run higher voltage and current to charge faster (like the Nokia ACP-12 series), but then there is the danger if calling it 'universal' of hooking anything to it with a USB port, and some such devices are not tolerant of more than 5 volts. If the 'universal' charger were capped at the actual standard USB level of 5 volts, then devices with decent sized batteries will all charge slowly, at least compared to the Nokia chargers which we already have. Doesn't quite sound like an optimal solution to me yet...