Why mine?
By far much cheaper way to get some BTC is to simply buy it.
Mining on the cheap is been dead for awhile now, if you have a truly free power you may have a shoot by buying
some older less efficient hardware.
Macbook = forget it, you wouldn't mine a single 0.01BTC in a century!
You wanna Bitcoin, = BUY it.
Cloud mining is not 99% scam, is like 99.999999% scam, remember that.
Yeah I wouldn't really trust cloud mining, nor would I invest now in ASIC miners, nor try to mine on a laptop (you will just be left scratching your head when your laptop won't work anymore and hot as a stove).
This is the whole argument that is going on right now. The only people that are profiting from mining are large mining farms, which pretty much insinuates that mining has become centralized.
It's too much of a headache to mine, and you will more than likely get nothing out of it for a very long time,
especially if you try to solo mine... plus you have to worry about the fact that mining rewards are going to be cut in half in 5 or so months now.
Just buy if you want to get into owning some.