Any of the other platform you're using hasn't built their traffic instantaneously. They gain popularity over other platform because they had something others couldn't offer and this is the case with Steem and why Steem is going to grow to be very popular.
Also simple doesn't mean it shouldn't be complex. Simple should rather be reference as build intelligently. I can't learn to fly a plane in 1 day but doesn't mean plane shouldn't exist or thatthey aren't build intelligently.
The best currency to hold long term is Steem Power.
10$ of Steem Back Dollar is worth 10$ USD no matter what the year you're in.
If you have a receipt for 10$ back by gas then the price of gas can fluctuate meaning you might have more or less depending on when you exchange your receipt but it will be 10$. The amount of gas you'll receive will fluctuate not the value of you receipt. Same will Steem Back Dollar, the only difference is they're back by Steem. So if you hold Steem Back Dollar and the price of Steem goes up you don't benefit from the price appreciation. Holding SBD is almost like holding USD.
Thank you for your perseverance.