I don't investing any cash entering my hand even if bitcoin is going down or up, I still prefer it to others.
Your telling on your title that you want to start your lifestyle with Bitcoin but then, your statement is contradicting your title.
You don't want to invest your cash or whatever is coming in through your hand and you don't want to buy Bitcoin whether it's high or low.
What do you mean that your prefer that to the others? You want other people buying it for you and you don't want to do it alone as there will be people that shall do it for you?