Is it normal that i want to live alone my whole life?

I feel the same way... reminds me of a quote by Mark Twain... "The more I learn about people, the more I like my dog."

I feel the same, I always picture myself in the future by myself, few friends, not married, no kids, it seems freeing.

The saddest thing in life is to be on your death bed and regret the things one DIDN'T do.
If you open up yourself for experiences, like loving relationships, it's almost certain that you will be hurt, but it's the good and bad that teach us and make life worth living. Your way will certainly work, but it seems a pretty shallow and boring life you are planning for yourself.

How men act these days? That's a bit over simplified, as there are many good guys out there who would as soon die alone as hurt a woman, physically, emotionally, or otherwise. You need to go out there and live your life, take chances, make mistakes, get hurt every now and then. The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things and make them unimportant. There's so much out there that you may enjoy, but you'll never know if you shut yourself off. I can't tell you what to do, only give my opinion and hope it helps. :)

What caught my attention here wasn't the idea of growing old alone, but the reason you gave for it: men these days/emotional risk. I'm not going to argue that a significant number of guys are ideal or reliable life partners (that's as politely as I can say it, fellas), but I don't think that's a reason to resign yourself to living alone.
I suggest that you really think about why you want that, and if it's just to spare yourself pain, I think you could benefit from trying to live outside your comfort zone. You probably have friends. How are they any more reliable/safer/less hurtful than romantic partners?
On the other hand, you could just be a solo flier, which is totally fine and normal. I also like to knit sweaters for my pets and occasionally I do fantasize about living all alone on a sailboat . . . never having to talk to anyone . . .
Whatever you decide, I wish you good luck in your endeavors. I just hate to see anyone end up alone out of fear instead of genuine desire for solitude, and I have seen it happen.

I'm a guy and sometimes I feel the same way

There is nothing wrong with wanting to live your life alone as long as you truly want to. Hopefully a few bad experiences in the past did not influence you to feel this way. Tricking yourself into believing that this is what you really want and then ending up regretting it when it is too late. That would be the ultimate tragedy.