I dont need a customer relationship management (CRM) systems.
But do you know what a CRM can actually do for you and your company?
Lets take a look at some of the advantages of a CRM system for small business.

But you cant search through them effectively.
You cant segment or group your customers by their purchases, location or their priority.
Because sheets werent designed for customer management.

Writing an email would have been 10 times faster.
Your team is an another one.
And they are essential to each other.

Your teammates create a certain relation with the clients.
But thats a relation between a client and a company.
Each team member should not be building the relationship with a client from the scraps.

CRM isnt as much for storing data as for putting it to a good work.
For example, NetHunt is aGmail CRMsystem.
Its also your project management software, activity dashboard, to-do list and a file storage hub.

Who was the best-performing employee?
Who is the most profitable client?
How long does it really take for a support case to get resolved?

Conclusion
There are probably several reasons why youre not using a CRM system.