Bitcoin is simply better because it is decentralized.
Gold in physical form is even more decentralized than Bitcoin. It also offers a true peer to peer experience when transacting. The only thing it doesn't have going for itself is that there is little to no convenience.
Because no matter when you invest in it, in time you will become richer
That's an argument with no relevance in relation to Bitcoin being decentralized or not. Bitcoin is so new that it grows organically over time, while gold has already gone through that initial stage of growth.
Eventually Bitcoin will become a 'boring' asset class too. Don't assume that Bitcoin will keep going through +1000% bull runs indefinitely. Be happy that you are part of this revolution at what I consider still an early stage.