Why I need a Niche to Make Money Online?

I am on my second day on Wealthy Affiliates and exploring this amazing and awesome plateform being a startup. Yesterday when I was exploring my Trainings, completed the initial lessons and reach on the lesson title, "Choose a Niche" I found myself stuck for a while.

Very first question which came into my mind is, "Why I need a Niche to Make Money Online?". So I start digging the answer of this question and guess what? Ifind the answer which I thought has worth to share with my fellow members of Wealthy Affiliates.

It is a common myth that, Marketing can be done if there is something physical or digital product available to sell the consumers and that particular product is called, "Niche". So becoming an affiliate Marketer to make money online, we must choose a product to promote and that will be our Niche.

So next question arise, "What Will be My Niche?. This is the most difficult question being a newbie for me and I think for every starter as well because of millions of products are waiting for us to promote and make money online as much as we can there is no end or no limit, it's only depend on your wish and desire.
What I learn so far is, niche must be that product/hobby/subject which I love, like, admire and can talk about it unlimited hours without any hurdle or problem. Let me put an example for you to make it more simple for your understanding is, I love Traveling and evey month I select a destination and while exploring it, I share my experince about culture, people, food, famous places and history of the place which I visit. So my Main or some people call it Primary Nich is, "Traveling" because I love, like, admire and can talk unlimited hours about it.
So my dear friends and fellow members of Wealthy Affiliates, I hope after reading my this experinse and explaination I assume you understand the importance of Choosing a Niche. So, I have "Choose My Niche" what about you?.
Share your thoughts and experince or if I have left anything unfold can ask me a question below this blog. I am not the authority but a learner who love to learn so if you have any suggesstion, comment or any kind of input or question please don't hesitate.