Well, the answer is yes. Mostly coins that don't have any use case are going to wipe out from the crypto market in the next few years. What will be left will the ultimate future of money. I think privacy coins could be the next big thing in the crypto market.   
                                                                                                                                                                                                 

Solid platform for CPU and GPU miners.

You can try mixing it with RagerX, which is the easiest and most profitable place to mine monero. I said easiest because it has a monero mining pool, and you don't have to write anything manually, in other words, everything is built-in and ready to go you. It is more profitable because it also increases your hashrate around 10% and moreover you can make some extra xmr buy promoting this platform (RagerX).

Have a look into it.  https://ragerx.lol/

I hope 2020 will be the Mass Adoption year for Crypto.

Well, I think instead of looking at many coins it is better to buy BTC because it is less risky as compared to other altcoins and no one can deny it's future potential.

Monero is no more useful for GPU miners, but I'm still in the group of GPU miners.
I've noticed that other Cryptonight coins are also good to mine right now, I'm Mining Cryptonight-GPU (Ryo Currency)from a while and it is going good till now, what I've noticed about this is this algorithm is; it is not what I was to use mine before because it is perfectly suitable for AMD/NVIDIA cards as well as it is suitable for low-memory GPUs.
It is not much profitable right now and I'm also not mining it for quick profits, Difficulty is low there, so I'm looking for long-term growth and big profits that's why I'm holding.
What you guys are mining which other coins should I mine with multiple GPU's (because I've both in my Rig)?

Anything can happen in the market, I don't think only BTC is going up there are some other low cap privacy coin that gains pretty nice in last 1 week if we take a look at tradeogre coins there are some good coin like RYO gains around 40% in just 1 week I think these low cap coins are less risky and have more chances for profits.

A trading plan is an important thing to consider for every trader some people always have a plan but they rarely follow their plan. Having a plan and implementing a plan are two different things. I keep my trading simple like I don't risk more than 5% in a single trade and when a trade works, I try to hold it for a long time and I can make money on the cosistant basis with this plan.