Never ridden? No its NOT a good starter bike. Its got enough low and mid level torque to hurt you. And it will run fast enough to kill you.
Most of these guys are prejudiced about their LITTLE bikes(LOL) and have probably forgot the sheer terror just just starting out on a road bike.
Take the MSF course. Buy a good beater 250 rebel or Ninja at the end of the riding season when their cheaper. Ride when you can during the winter and all next season.
Decide if its what you like and if so THEN move up to a Savage, Kawa 500, V-Star 650 ect. Ride a couple more seasons then move up again if you feel the need.
Take your time, practice practice practice. Get used to haveing your head on a swivel being super aware of your surroundings.
Cages don't care, your invisible...at best nothing more then a nuisance on the road THEY own.
By then your survival instincts will be better honed and you'll have a better idea if you want sport, cruiser or touring as your long term ride and what size you NEED.
Throw down to much torque or ponies too soon and figure on spending that upgrade money on hospital bills or fixing your ride so you can JUST get back on the road. Or a tombstone.
Your biggest threat besides idiot cagers is too much bike and lack of experience. Road conditions plays a close third, ice, oil, antifreeze, mud, tar snakes, ect. Keep in mind the 650 thumper is what used to be years ago the BIG road bikes. Just because theres 600 super-sports and 2000cc cruisers out there now don't make a 650 a GOOD starter bike for the inexperienced.
Theres a ton of rebels out there for good prices and they make nice lil bobbers pretty CHEAP. And they are funner then SNOT around town.
They pretty well hold their resale value as stock bikes to so you basically end up only loseing gas money, insurance(CHEAP) licensing and title fees.
Thats money saved for a bigger nicer bike when your ready.