There's no need to put whole post in bold. We can read it just fine. Bold is for making parts of the texts become more visible. If you write everything that way you're defeating the purpose.
1- Whales control big percentage of the 21 M Bitcoin
Wrong, they control only a small %. Since we have 17 million in circulation and at least 10% has been lost forever, and there's Satoshi's coins, there's less Bitcoins than you might think. Even if 50% of the rest is controlled by whales, what does that change? It's only around 7 million and I'd argue that this is an overestimation.
Whales had to buy their coins from someone. Don't sell and you won't be helping the whales.
2-they can manipulate the price
Only to some extent. They have to sell to manipulate the price with their coins. If you buy and hold, you take this ability to manipulate from them.
3- they did created new coin each time they disagree LTC BCH BITCOIN GOLD ...etc
You can also create a new altcoin. Does that make you a whale?
4- if you have a bitcoin you will not used as a money you will always want to keep either to sell it higher price or waiting till it reach you buying price to recover your loss
I wish I cloud have reached to this conclusion earlier
You talk like a panic seller.