Regrets. No regrets at all.
Changing It can be frustrating wanting to see the changes but they're slow to begin with.
Not changing You will change physically, it just takes time and believe me, it's worth it.
Getting a tember. Personally I have found that my temper has improved a lot on T. I've stopped fighting the world and now I can just laugh at things that used to rile me.
Not being me as in my personality. The changes you will notice will be positive ones as the dysphoria decreases. Unless you have a lobotomy or a serious head injury you will always be you.
Not being a loving person like I am now. T doesn't stop you being a loving person. It does stop you going awwwwwww over kittens and babies and squealing over hair clips
If I did regret I scared of never getting back. That is the biggest hurdle to overcome of all the fears. You can stop T at any time but you cannot reverse the changes. Would you want to go back?
My biggest fear is being atracted to men. I have always been attracted to men. I could always see the aesthetic beauty and sexiness of women but pre-T I was never attracted to them. Now, if it moves I would happily nail it, cats run as I approach

One thing to remember is that we go through the teenage boy stage of wanting to hump custard pies and watermelons too (if someone tells me now that's not normal I'll die). Testosterone just makes you more horny, you notice things you never did before. The longer I'm on T those feelings have eased off and I'm back to liking women as people. My emotional attachment is still towards men. Don't worry about temporarily being attracted to the gender you never thought you could fancy, it passes.
My oppintions chaning. That just happens as we get older.
My views ect ect. See above.
My likes and disslikes. Can't say I've noticed any real changes in this area.
I'm scared full stop. That is a good thing. It makes sure you examine yourself very closely to make sure you're on T for the right reasons.
Anyone else fill the same or felt the same. Yes to some of it, no to others.
And what happped to you after T I became me after a lifetime of trying to be someone else. It felt like being in a play where everyone else knew their lines but I didn't have the right script.
My biggest moment of fear was when I had the first syringe in my hand poised to go in. That was a moment of real soul searching. Giving myself that shot was the best thing I ever did.
People can give you advice and we can tell you about our own experiences but when it really comes down to it you are completely alone. Family, friends, doctors, other trans people can be there to support you but the decision to take T ultimately comes down to you knowing how you need to live the rest of your life.
If you think you might want T just for the physical changes then perhaps put off taking it and give yourself time to think it through. Hopefully you have a long life ahead of you. Delaying the decision to take T for a few months or even a year or so won't spoil things if being a man is the right life for you. On the other hand if you wake up in twelve months time and think "what the hell did I nearly do to myself back there?" then
not taking T will allow you to physically stay just as you are.
Testosterone is a wonderful thing, it is also very powerful and not to be abused or gone into lightly without being fully aware of all the possible consequences, both negative as well as positive.
Personally it was right for me but I would always urge caution. This is your future you're deciding. Think of the film Sliding Doors, how will your life pan out if you take T and how will it go if you remain as you are?
Good luck with making the right decision for you.