The decision to use cloudmining services depends on your needs.

There are some people who want to get involved personally (hands-on). Cloud-mining is not for them.

There are numerous other people (many of them almost without any basic knowledge or experience in altcoins) who would be willing to learn but think that this is a difficult task for them (e.g. setting the miners themselves etc.) and/or people lacking the space to have their own miner.

As far as profitability is concerned it all comes to lucky guesses as it always is the case in the crypto world. Can you find a good coin to mine before it becomes a main-stream hit, then you will have profits. Did you put all your money to mine a scam coin you will lose.

Nothing in cryptoworld is straight forward!

Just my 5 cents!