How can we miss Uniswap's UNI.

Huge one missed. In fact, I am a little surprised about this section and the exchange tokens listed (not quite popular ones but definitely necessary). I mean, how do we forgot/omitt BNB. Native token of the number crypto exchange by users, volume and liquidity; those who contribute majorly to the development of exchange's native tokens and on top of that, top 5 cryptocurrency by CMC. I think it should be listed ASAP to make here more lively.

There is actually not much complex explanation to this other than greed; attaching to funds not yours and technically, everything based on the internet (which of course exchanges too) are susceptible to cryber fraud and theft.
There is no perfect solution to that other than keeping the funds out in cold, offline storage like Coinbase's.

So everything is so unorganized, tons of apps, tons of wallets, private and seed phrases saved in phone text file.

I wanna know how are you guys keeping your private keys/ seed phrases?

The private keys are best to be kept offline, written on a paper and kept privately in a secret place with ease of access and away from any compromise. Might be a long process but I strongly believe it's the best way. Private keys are so much sensitive and all necessary precautions are to be taken in keeping them safe and and accessible.

There is always a way to get and information or motivation to start anything. It could be through friends, family members, online publicity, and so on. I got to know about cryptocurrency through my brother and he showed me how to join through this platform. How did you know about cryptocurrency and how did you join altcointalk?.

I think I got to know Altcointalks through no other CT; a similar cryptocurrency forum, a counterpart. I think I wasn't much moved to be also part of here in addition to no other CT until I saw the teleportation feature which I actually find innovative and a very good offer to cryptans from the other communities who might feel the need to.

Good list, no doubt.
For me, I would remove a few to replace few interesting altcoins probably most which aren't as popular and not widely traded on the best exchanges. Taking NMX token, Nominex exchange native token for example, the farming the distribution and the usecases all looks so intelligent and creative. Those that really contribute to long term future of crypto.

We are apparently closer to alt season than ever since the last. With that, it is actually not very certain choosing the best to invest in or the most profitable ones. It all also depends on type of trading you wish to execute; long term or short term.
Personally, I think the best altcoin to keep eye on recently are BTT, TRX and HOT for mid-term holding.
It is my opinion, def no an investment advice.

For me the best erc20 wallets are the imToken and Trust Wallet. It is convinient to use and so easy. It shows you the price of any listed tokens

Could it be any other apart from Trust wallets and MyEtherWallet?
I think both provides the best wallet service and decent security with addition support of decentralized application which definitely is key especially in DeFi. I have used both and hope couldn't want more of the service and features. Any of the above 2 is okay.