The 750, with proper additions, can be a fine practical around town, running errands, basic transportation type vehicle. Also, with proper additions, it can be a decent long distance bike.
It doesn't have the at-speed, roll-on torque of the 1500-and-up bikes. On the larger bikes they can just roll the throttle and pass a vehicle whereas on the 750 to do so you may want to choose to do so at a better spot in the road or when the on-coming traffic slacks off. Aside from that I've found mine does well on the freeway and I have no issues about hitting the highway with it. I have done it and will continue to do so.
No matter how much money you can pour into making a Volkswagon Beatle a better road-trip vehicle it'll never be on par with your average Cadillac. But it'll get you there for sure.
Every machine has its pros and cons. For example, as I get older (64) I appreciate being comfortable more and more. I've got mine just about as comfortable as can be practically expected to be. No, it won't be as comfortable as a full-up touring bike but then again, to its credit, its a good 300 to 400 lbs lighter, too.
Back in '06 the wife went out one night and won 8K playing Bingo. The next day the bike was paid for before leaving the dealer. The sum total of "my" money put into the bike amounts to all of the additions/mods I've made. So, from a fiscal perspective, I'm way to the good. Look at the list of things below, under this post. The most expensive thing I've shelled out bucks for was the seat. It ran me $500 to have it made for ME. That was cash well spent as I can ride all day long quite comfortably. (My butt has not been angry with me since.) The rest of the list were all under that $500 one-time cost.
Even adding all of them up, it'll be less than buying a new bike so I'm happy with what I've got. Besides, ITS MINE. You don't see a lot of them on the road and of the ones you do see probably none will be setup exactly as mine is. When I park it with a collection of other riders its virtually guaranteed to be the only 750 Vulcan there, which can make it a conversation piece. And I can easily pack enough stuff on it to get me through a week or two worth of a road trip.
Bottom line, your bike has tons of potential for practicality, long-distance road worthiness, and flat damn FUN! And once you start to piddle around doing your own maintenance on it, you'll come to LOVE the centerstand!!!