IMO (& that always worked for me), always start by explaining the underlying technology; i.e. blockchain and how it helps achieve the required decentralization, trust...etc (not only for Crypto Currencies but for all other industries as well)
Then move directly to BTC and how it is the king of the Crypto Currency world that has been there for approximately 10 years now, how it's gaining interest and attention from thousands of folks every day, how it's the base for all ALTs out there and so on....

Despite all its current weaknesses (i.e. Tx fee and time); it's still (and will always be) the number 1 Crypto Currency (the King I would say)
It is the base of all other ALTs, it was (and will always be) the clear example of decentralization for a payment system/coin (to act like money)
Even when someone is discussing its underlying technology 'blockchain' for any other industry, they can't prevent themselves from referring back to Bitcoin!

Regarding BTC price; Yup, I believe it'll reach $25K sometime before this summer
As for the FIAT; I don't agree, They'll all walk together hand-in-hand (There will be more adoption for sure for BTC and other crypto currencies but not to the extent that they'd replace FIAT)

The current generation is smart and can digest Technology faster than us (looks at babies using smart phones or tablets)
So I believe that explaining blockchain to an 8-years old kid can work well if you can use simple jargon and clear idea (blockchain as opposed to a centralized thing like the bank for example...)

No, but both will go hand-in-hand

Its price pattern (ups and downs) is no different than others....But I always believe it has a bright future

Every now and then, I look at its original white paper where it was first detailed along with the underlying blockchain technology and always saying to myself: WoW, that was an amazing piece of work!.....Since then, it has been adopted by millions of people and all other Alts followed (and still following)

Right!
And despite the fact that FUD/Panic always leads to price decrease but I always see it as a healthy symptom and a brilliant opportunity to increase your holdings (according to your plans and budget of course) or to jump in the boat (for people who aren't onboard yet)

IMO, hold and don't sell out of fear/panic because many others are doing
Also, these times are ideal to buy more (could not be your case but in general)

I always see blockchain as the gem of BTC and all other Crypto currencies
it has been adopted by tens or maybe hundreds of other Industries and technologies, so I believe its future is awesome!

Ohhh! That's why it's always a good idea to start from the very basics: blockchain, consensus, decentralization, payment method, no middle man....etc then be able to judge how dangerous it's and why it's so different that other physical currencies (FIAT)

Uncapped ICOs are generally risky to invest in unless the folks behind the project have VERY GOOD plan on what they're gonna do with all the money.
Something like Tezos and their plan for the funds raised (with moon shot and mars shot)

Simple answer: A Decentralized Payment system with no middle men (i.e. banks...)
The question would rather be for blockchain benefits as they are broad than bitcoin

Ideally and generally, it's when the price is 'Low' over a period of time.
But as BTC getting more adopted and its price is increasing and depending on your investment goal; it can be 'now' (that's in case your investment is a long-term one so even if the current price is not at its low mark, it will eventually go up and you'll make some profit at the long run)

For many reasons:
To make some profit
To buy other crypto currencies or tokens (ICOs)
To cash out
To fully escape from that Crypto market (for people who can't live with its frequent changes)
 

it's the fear of anything that's not under their control/authority.

As long as there is a price movement (up or down); there are buyers and sellers, meaning there is always a chance to buy but it depends on your investment goal and the right time to catch the train

I would say 'Yes' and this is apparent from the number of ICOs lately integrating KYC (Know Your Customer) and AML (Anti Money Laundering) techniques as essential steps in their process of crowd funding.

What always worked for me with newbies (and even with haters as in a previous post) is to explain blockchain and the brilliant decentralization concept then moved seamlessly to bitcoin (maybe Alts as well)

I'm in the same boat now, our list includes:

Bitcointalk forum
reddit
telegram
slack
medium
twitter