depends on what your buying. If you really believe eth is the next bitcoin you will buy now and hold on for the future.
Some projects have good long term prospects.
With shares your investing into a company and what they are doing, their revenue can go and down. Its similiar to crypto, some projects have things they are doing to build utility and price goes up and down too.
Crypto is more riskier because its decentralised so you have no governance like sec etc.
There are lots of crypto projects building metaverses and gaming - we all know gaming is a huge industry. Other projects like Hokk are looking to mirror banking products e.g. decentralised version of pensions.
Crypto.com just realised debit cards that allow you to pay using crypto much like our debit cards where we pay with fiat. Infact their debit cards give much better rewards than youo get in the fiat version.
There are some tokens that you can stake and give you huge interest rates some as high as 2000% a year.
You have to do your research and read up on the projects, join the social media platofms, ask questions etc.