Doesn't look painful at all to me. I prefer a decent curve on my toys - my G-spot loves the attention. Besides, it's only the small, blunt-ended silicone section that you insert, and even then not all the way (the bump is meant to rest on your clit). With that in mind, the inserted curve actually isn't extreme at all.
The whole point of the curve is to give you a G spot orgasm. While I can't speak for every woman, personally I need some really heavy stimulation to have a G spot orgasm. Not only is a big curve necessary but a whole lot of rocking in and out at what would seem to be painfully rough except it isnt, at all. That's the thing about the G spot, it takes a whole lot.
I will say though, that I hated this toy. I liked the G spot stimulation for sure but the curve of the handle made it so I had to pull it out some and rock it back in in order to get clitoral stimulation and some degree of clitoral stimulation, often quite a lot, is also what I need to have a good G spot experience (and imagine that is also true for many) Might be my own anatomy because to pull it out enough to really get my clit then it was no longer at my G spot and the rocking never could quite do it... Now on the other hand the hitachi magic wand with a similarly shaped glass dildo works like a charm every time, but I need the stimulation in bth places at once instead of the rocking and the handle shape prevents you from really bringing in any other clitoral toy...
And okay that is practically a review there but yeah, it doesn;t hurt at all, if you hit the right spot with it, it actually feels great. The big thing is, if you want to go for G spot orgasms, you're going to want to already be very turned on first and probably significantly turned on or at the very least well lubed before putting this toy it. If you're not then yeah, it probably won't feel so good. And if it either doesn't reach your G spot or you're not totally sure where yours is, it probably won't feel so good either... Or maybe not because much of the vagina actually doesn't have a whole lot of nerves and sensitivity, it's more the outer parts and the G spot, so in the wrong spot you just might feel kind of full and slightly uncomfortable... But I can assure you it's not at all painful.
Not painful at all, if anything the silicone portion (the part that's inserted) targets the g-spot quite well. It helps that it's somewhat flexible and not a hard plastic. I've personally never felt any pain from it, nor any discomfort. The handle on it is great for helping apply pressure on the g-spot and makes holding it feel almost natural, unlike many other vibes where your 'reaching' down, which can be a serious distraction.