Bitcoin the only decentralised cryptocurrency that is dependable and guaranteed return on investment which is undeniably the truth about it.

Bitcoin as a source of income or as an investment plan, which is better?
(It has many advantages and disadvantages, but advantages superceeds the disadvantages). Putting the disadvantages into consideration and as a person that want to lower their risk of loss, will bitcoin be suitable as a source of income (not fully, like part-time job), or investing fully in them and wait for a large profit since many users here in the forum foresee it that, at halving the price always go up above the current All time high.