It's really simple, though before you choose, read on what the pros and cons are gonna be.

Pros
-Though, a Dragon, you still retain your human shape and size. You can still make yourself look like an actual Dragon though
-Wings enabling flight
-Strong flame breath which you can control the temperature, shape and size.
-You can still understand human speech and speak it, you can also understand what other animals are saying without problems.
-Claws make a good weapon for fighting and self-defense.
-Hearing and sense of smell increases extraordinarily.
-(For some) Lifespan increases extraordinarily

Cons
-Being a dragon, you WILL freak people out, so you need to calmly tell them that you mean no harm and this somehow happened. Do not tell them how it really happened though, no one will believe you.
-You may or may not be able to have a child of your own.
-(For some) Lifespan increases extraordinarily.
-The tail will be a sensitive spot.

So, these are the pros and cons. Would you want to be transformed into a dragon under these circumstances? Me? Oh, hell yeah! That would be awesome, I don't care if I can't ever turn back, it'll be awesome.

Also, don't  pick option two just because it's referencing to that Zelda game.

You know, in a way, that would be pretty amazing to become a humanoid dragon, the reason why I think so, I have read your pros and cons and somehow, most of them I already know and fine by this so yeah, I do like to be a humanoid dragon.

Hmmm. Good questionnto think about...Personally, I think it would be pretty cool to be a humanoid dragon, I just think that by reading your pros and cons that you listed. I think they outweigh the cons because I mean who wouldn't want huge wings and awesome fiery breath to burn people with? That is just awesome in my opinion, so I think it would be cool to be a humanoid dragon! So because the pros are so freakin' cool, I think I would definitely go for it XD

I think that this is a pretty cool thread question by the way, it is unique, creative and cool! I am shocked more people haven't replied to this.

I would like this, but personally I'd be much happier staying as a fox. Sure it would be nice for a while, but my popularity would definitely decrease.
Seishiro Leonhart : Since you actually are one, I felt I might summon you here.

As Tails the Fox mentioned, yes, I am a humanoid dragon, and I say that being a dragon is AWESOME, I do have the qualities you mentioned, but I never really felt my tail to be sensitive, since I think I could use it as a whip or something like that.
Freak out people? That have it's qualities, for example, when I want to buy a ticket to watch a movie, and the line is BIG, I could just scare them off and get my ticket, that is, if I don't scare the girl who sells the tickets too, but since I can be quite charming, I could convince her that I am a nice draggy. :3
If I were a human, YES, I WOULD BECOME A HUMANOID DRAGON, but I already am one, so it's useless to ask to become one, right? :3

One flaw in one of your cons. You said you can't tell anyone how you changed because nobody will believe you. Thing is, if they see that you are a flying, fire-breathing, humanoid dragon, do you REALLY think that they aren't going to believe in the story of how you changed? When you have proof standing in front of you that someone is a humanoid dragon, it doubt believing in the how story would be an issue

rcarter2 : Yeah, maybe, wasn't really thinking straight and I was kinda tired when writing this... :/

Seishiro Leonhart: When I said sensitive, I kinda meant that it would hurt if it get's caught in a door or pulled by something.

What? No! Come on! Don't do it! I want to keep my girlfriend!

Barathemos : No one said you couldn't. Besides, did you see the one above it? "Sure, but only if I can switch between my forms at will." Meaning, you can stay as a human near your girlfriend and only turn into a dragon if necessary. ...Still, your choice.

Goku490 :   You know how the world works, she will find out anyway. I don't think she will date a dragon.....

Okay, suit yourself... I'll just be enjoying flying around then... at least in my imagination...