I guess both have it quite difficult, gamers because they have to try and stand out when there are thousands and thousands of other channels uploading the same games/style videos as them, and vloggers have it hard too, thinking of the idea, trying to make it different from other people who have done a similar thing, loads of editing, finding the place in the house with decent lighting/decent background, thinking of what to say, trying to be entertaining. etc etc. Who knows. Everyone has it hard at the beginning though, getting noticed is extremely hard for everyone! Even people with amazing videos!
Edit: Just re read what you wrote, if you're only talking about actual vloggers who walk about with a camera and show everyone their daily lives, I think this has got to be the hardest one, you can't really just start out doing that, you need to start out doing pranks or beauty or funny sketches, etc. If you literally just start out showing people your day by day life, it will be pretty much impossible to get people interested unless (like others have said) your life is very very interesting!