The more self-reliant you are, the more you can help others. Those who are constantly in need of help from others have a difficult time offering help to anyone else, in my experience. To me, this is a moral argument for self-reliance because it posits self-reliance as an ability to be generous, charitable, and actively compassionate.
We are limited in our expertise, our physical abilities, and in many other ways. Nobody is absolutely self-reliant in my opinion, and if they are, they are not achieving as much as they could through collaboration. We are social beings, and it is our ability to work together that is one of our great strengths.
While we usually consider it a positive trait to be self-reliant, it can be a problem when in your self-reliance you don't establish friendships or relationships with people who could help you when you need others to help you. Sometimes the very self-reliant person starts to think that their needing help is a bother to others, but most of the time, people want to help each other out.
A disadvantage of self-reliance is that you don’t let other people help you. This can lead to your being overwhelmed or making others feel bad because they feel like you are snubbing them or not opening up to them. It is always good to be able to do things for yourself, but sometimes you have to let others help!
An advantage of being self-reliant is being able to undertake and complete tasks independently, without having to wait for others to finish their part of the work. Being self-reliant means not having to answer to anyone else for what you do-if it works, you get all the credit and satisfaction.
On the other hand, there are many situations in which involvement of others is reassuring and helpful if not absolutely essential in order to get something accomplished. Combining ideas and strengths and abilities with others can increase the likelihood of a successful conclusion to a project and often means the work will be completed sooner than if one person does everything alone.
From my point,
I do not think there are any disadvantages of self-reliance.