I am new here, but I have been following bitcoin and cryptos for about 5 years now.
![Cool](https://bitcointalk.org/Smileys/default/cool.gif)
I agree that the Bitcoin transaction fees are quite expensive, but this is also is because of the amount of electricity used to validate a transaction.
Every transaction is consuming about 740kWh! Then you also have to compensate the miners for the cost of the mining hardware, rent of datacentre space, salaries and their gain on the investment. So it's no wonder that the transaction fees are high.
This is also one of the main problems regarding the adoption of bitcoin for everyday transactions: if you do the math, it is simply not feasible (at least as it is right now):
- Credit cards are making about 4000 times the transactions of Bitcoin
- Replacing the credit cards would consume about 300'000 TWh/year, while the current worldwide electricity production is only about 23'000 TWh/year!
If I have to write a list of the 3 main disadvantages of bitcoin, I would say:
1) Power consumption: has an impact on adoption and cost of the transaction.
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)
2) Very slow: this is one of the reasons why I prefer other cryptos!
![Cry](https://bitcointalk.org/Smileys/default/cry.gif)
3) No privacy: this is a fundamental feature that is currently missing for bitcoin. That's why I like Monero.
![Roll Eyes](https://bitcointalk.org/Smileys/default/rolleyes.gif)
Except for this, bitcoin still has the first-mover advantage, that makes it very popular even if in my opinion, there are better alternatives nowadays.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)