Bitcoin was the first of its kind, i first heard of it in 2011, and didn't think anything of it.... i feel very few people at first didn't invest much, but the people who did invest didn't have to invest much money, when it first came out, if you had invested $10, you would have a nice fortune now....because its sitting in the thousands now, i feel very few people for this reason wont invest in it, even if i did a $1000 now, i think it would take forever to see a huge outcome compared to the first investors. i feel the majority of the overall bitcoin online is from people who first bought in. Due to this i get the impression bitcoin will fall drastically here soon.
Now that people see the uses and market for online currencys, a lot more people are paying attention to it, due to this, I'm feel the average person will invest in other coins like ethereum, ltc....etc, hoping for a big outcome like bitcoin had.
Any opinions/advice is welcomed

Only idiots would invest in garbage with low marketcaps hoping that they pump, and this is what people that invest in random altcoins hope.
People that's smart and want a position in crypto will still have Bitcoin as the #1 time-tested store of value to hold. You can release as many altcoins as you want, none can claim 8 years of uptime and counting.
This is not as easy as "oh BTC will not go up anymore because it's too high already, let's buy shitcoin X"
In fact, BTC marketcap is still tiny compared to the rest of the world, so you are still early.
yes in fact no one know that what will happen to the market in future, even we cannot predict about price of bitcoin or for any other altcoin, but still it is too much important to have good study about the market. we should get the opinion and speculation of the expert people, because some time their speculation proof as correct, for example in previous days the investors and expert were confident about the price of bitcoin that it will rise again and now we can see that the price of bitcoin once again trading above 4000$, which is really a very good sigh for the future of bitcoin.