And if you had a hangar - would you get a dedicated tow vehicle AND something else ? Like I said - I like the dedicated in/out options (though not the sidewinder), but if you have the need to tow your aircraft to fuel or something, be aware of its shortcomings. And taxi the plane there would be a bad option for say turboprops, as cycles count. And a many cycles for a 10 minute taxi would be a bad idea come Hot or overhaul time. And while this doesnt apply as much for pistons, its probably a bad idea to fire up piston engine(s) to taxi to fuel as well.
My point I thought was pretty simple - if you need to tow the plane to the fuel pump, you get an actual tow vehicle - a golf cart or a tractor or an old riding lawnmower or basically any other kind of tug that you ride on. You don't get a Sidewinder or an AC Air unit or anything else that is essentially just a powered tow bar - if you do, don't complain that it isn't appropriate for your intended use. That's like buying a 152 and then being disappointed that it's not very good for crossing the Atlantic.
An actual tug, of course, can pull the plane out of and back into the hangar as well. So if you need a long-distance tug, and only want to buy one item, you get that. But, sure, I know people that have a tug for when they need to do long-distance stuff and a sidewinder or similar for just pull-in and pull-out.
I'm not sure what you're talking about regarding taxiing to/from the fuel pumps. That's pretty standard practice and is what most people do, piston owners at least. You go flying, land and taxi to the pumps, fuel up, then restart and taxi to the hangar. Or if you need gas before the flight, you taxi to the pumps then leave from there. That's pretty normal. Doing otherwise significantly lengthens your preflight time as you tug the airplane to the fuel pump, then tug the plane back, then load up and depart - does anybody do that?
Turbine aircraft in my experience are more likely to be pulled out or fueled by the FBO, although sure, if your FBO doesn't provide that service, then I'd be looking into an actual tug.