Blockchain technology was probably born with Bitcoin in 2009 thanks to the proposal of Satoshi Nakamoto. After 15 years, the features and capabilities of blockchain have been developed and added a lot. Not only Proof-of-Work (POW), we have Proof-Of-Stake (POS), Delegated Proof-of-Stake (DPOS), Proof-of-Authority (POA), Proof-of-History (POH), Practical Byzantine Fault Tolerance (PPFT), Proof of Burn (PoB), Proof of Capacity (POC), Proof of Elapsed Time (POET)...
[1, 2]. I have experienced some blockchains as a user, to be honest, I am not capable enough to understand the technological aspect of these consensus protocols. What I can evaluate is only the speed (tps) and transaction fee (USD), and these two parameters are also related to each other: the faster the blockchain, the lower the fee, and vice versa.
I have been participating in the market since 2017, and I have used blockchains such as Litecoin, Dogecoin, Ethereum, Waves, EOS, Solana, Avalanche, and most often BNB chain. I recently experienced the Bitcoin blockchain through the Electrum wallet application. Although it is not as cheap as other blockchains, the feeling of interacting with the Bitcoin blockchain is really different, especially when I found a way to reduce the transaction fee to the lowest level of ~ 1.5 USD when the Inscription trend was still very hot
[3].
Although I really love the Bitcoin blockchain, I can't deny that I'm not happy with having to wait a long time and pay very high transaction fees compared to other blockchains. The same thing happened when I used Ethereum and paid a transaction fee of up to 20 USD in 2021. With EOS or Solana, transactions are almost instantaneous and transaction fees are only under 1 cent
[4].
Of course, I do not deny the advantages of decentralization or the stability of other blockchains, even transaction fees kept at around 1-10 USD are considered necessary to help miners survive and continue to protect the network, and at the same time make it difficult for efforts to attack the network. I also understand the impossibility of the blockchain Trilemma
[5], but from a user's perspective, I really like the Solana blockchain because it has a large ecosystem, has enough Dapps for user needs, high speed and very low fees. Luckily I haven't had any problems with Solana outages, maybe because I'm not a regular user on the Solana network, I only swap tokens when I really need to.
This is not investment advice for SOL or Solana tokens, I'm just sharing my own feelings when using the most popular blockchains. I myself only hold a few dozen USD in ETH, BNB and SOL to pay for transaction fees on DEXs, not as a long-term investment like BTC. I guess I was wrong not to accumulate and hold more ETH and SOL during the last crypto winter

I would like to know your views on blockchains in the market:
- What is your favorite blockchain and why: speed, transaction fees, profits?
- How often do you use that blockchain and for what purpose?
- Do you hold and consider the native token of that blockchain as a long-term investment?
References:[1]
Analysis of the main consensus protocols of blockchain[2]
Consensus Algorithms in Blockchain[3]
Bitcoin Average Transaction Fee[4]
Solscan: Fee tracker[5]
The Security Trilemma and the Future of Bitcoin
Note:- My opinion was posted first in that topic, on Bitcointalk
- I leave the source link to avoid plagiarism accusation.
- I excluded/ included minor things from an original thread if necessary.