I could play roulette 5 times putting my bet on red each time. This could win me a lot of money or lose me a lot of money or come close to even.
If I play roulette 5000 times putting my bet on red each time I will more closely get the result of being down 1-2% as the house advantage dictates.
If I buy and spend bitcoin every day/week for several years the result will be a slow climb as bitcoin is a depreciating currency.
So no, bitcoin is not only suitable as a store of value.
If half of the time you are holding no coin, you lose half of the appreciation potential, it means as soon as you spent, you must buy back, then why not just buy and hold bitcoin and spend fiat