A couple bucks. But I know there's no way I'd have hold through all those years

well, his mistake was he didn't check the price of what he bought and sold, so maybe not exactly a crypto experience problem
check the prices on the exchange you do the trading

I don't know, at any time a bitcoin killer new crypto might appear
or a black swan that couldn't be predicted like an exploit or something that ruins it all
but barring extreme situations it will only rise lol

I don't like ripple, it can be considered a "banker coin"
Eth is great in vision and execution

I don't like watching the prices all the time, they fluctuate too much

that' s a good point, I see people saying they don't have 15k to buy a bitcoin, they don't know or don't like the idea of buying a fraction of a coin, so if btc goes way higher maybe people will be discouraged to buy

I like the ones with real world usages

WTC and WABI for example

it's inherently unsafe
but potentially you can multiply your money many times
so there's the tradeoff

It's possible, but only do this if the 100k mean nothing to you, i.e. if you lose it you won't care too much.

Otherwise, you will only you get sick from worry and not make the best and most rational choices. If that's the case you should chose a much smaller amount to be able to think clearly and have the bulk of you money on safer investments.

would anyone actually follow his indications? well maybe for the speculative pump I guess

These last months have been crazy, so almost anyone could have made money. So it's not an indicative of how you'd fare in a not incredibly bullish market, so caution is advisable

Start slow, buy one good graphics card and see if it works for you, if not you have a nice card

but is it still your address if you change capital letters to lowercase?

Fica aparecendo "erro: endereço de carteira inválido"
 

maybe one day one of the decentralized exchange altcoins will solve all our problems

if your site is very good, gambling goes on forever and dating stops fast (people get addicted and keep coming back, or people find the person they're looking for and never return)

Bitcoin can't go up forever. That's what people think when a market grows a lot, they don't think about it ever ending. But, it's kinda impossible to know when it will stop growing, predictions failed all the way from $5 
just try not to over commit what you can't lose

"bitcoin" isn't a job
you mean investing in crypto? just buying bitcoin doesn't take your time or requires studies. If you mean researching alts, daytrading etc, that can be done with any asset, not necessarily btc

price prediction is impossible, we can try to predict tendencies but not the actual numbers

Why do you only want to invest in alts? Maybe consider buying eth or BTC as safer options