There are a number of different types of wallets that can be used to store cryptocurrency. They come in different formats, designed for different types of devices. You can even use paper storage to avoid having your currency stored in digital format at all. The three distinct categories of wallets available for storing your currency – software, hardware or paper.
And offline wallat parsnal use

This is interesting, maybe if you can provide further details about your work before? You can also maybe provide references that people can look into.

If we are going to be biased, and only favor on just one side then what's the use of the other? What's the purpose of having these two kinds of wallets if the one is much better than the other.

So, I've come to the conclusion that, they both have their own use. Or should I say, there are things that the first one is good in some points while the second one is not good on those points and vice versa.

Simply, the online wallet is for easy access and monitoring, though it is not recommended to store a lot of amount in this kind of wallet due to hacking or lack of security. While offline wallets are best when you are storing a large amount, as you know that you are not going to have issue in worrying that it might just disappear.

If you want to store more bitcoins go for hardware wallet;if you can't afford stay with online wallets

Bitcoin is one of the booming electronic coin companies in the whole cryptocurrency which they become always number one. .Internet connection is their vital service needed in order to operate and I think the company should consider offline system so that incase the internet connection become black-out the bitcoin still operating.

If you are planning the long term, the offline wallet is better since it is more secured. But, for daily basis that you can always change, the online wallet is recommended.

Online wallets are available from exchange or other websites, one can use online wallets if he is intersected in regular buying and selling of bitcoin and for the use of trade purposes but one should not store large amount of Bitcoin in online wallets as Cyber crime is increasing and it could risk the amount of Bitcoins stored. On the other hand, Offline wallets are more safe if someone wants to safely. One can use USB pen drive or other storage device to safely download Bitcoin offline, which ensures safety of Bitcoin.

Offline wallets will give you the most protection and security. As long as you have secured your private keys, no one can access you Bitcoins in an offline wallet. They can be fully secure whereas there is always a risk with online wallets because they can get hacked. And definitely, don't leave many of your Bitcoins on an exchange because they can get hacked or steal your money or just go out of business. I would suggest only keeping a small amount on an exchange just for trading.

In my opinion,the  selection of wallet still depends on how the user wanted to use it. For security reason offline wallet is way better than any online wallet. You can use it for long term holding and at the same time it's your responsibility to secure it unlike an online wallet which is connected into the internet where it can be vulnerable to online attackers (hackers) although they have security measure you can never know.For ease of access then it's online wallet where in you can easily use your coins( specially for trading) anywhere as long as there is an internet connection.Having them both is better, one is for security and long term storing,you can hold as many bitcoin as you like and one is for storing small amount of btcoin for your daily transaction.

From the very beginning. Do you want to use a popular online wallet, like Blockchain.info? This online wallet is to control your private key. This will increase your potential to become a hacker's prey. Blockchain users use more than any wallet, so far there are millions of accounts created above, online wallet has never been proven, it is immune to hackers.