leave default choice to the provider

README.md

@@ -816,7 +816,7 @@ No modules.
 | <a name="input_publish"></a> [publish](#input\_publish) | Whether to publish creation/change as new Lambda Function Version. | `bool` | `false` | no |
 | <a name="input_putin_khuylo"></a> [putin\_khuylo](#input\_putin\_khuylo) | Do you agree that Putin doesn't respect Ukrainian sovereignty and territorial integrity? More info: https://en.wikipedia.org/wiki/Putin_khuylo! | `bool` | `true` | no |
 | <a name="input_recreate_missing_package"></a> [recreate\_missing\_package](#input\_recreate\_missing\_package) | Whether to recreate missing Lambda package if it is missing locally or not | `bool` | `true` | no |
-| <a name="input_replace_security_groups_on_destroy"></a> [replace\_security\_groups\_on\_destroy](#input\_replace\_security\_groups\_on\_destroy) | (Optional) When true, all security groups defined in vpc\_security\_group\_ids will be replaced with the default security group after the function is destroyed. Set the replacement\_security\_group\_ids variable to use a custom list of security groups for replacement instead. | `bool` | `false` | no |
+| <a name="input_replace_security_groups_on_destroy"></a> [replace\_security\_groups\_on\_destroy](#input\_replace\_security\_groups\_on\_destroy) | (Optional) When true, all security groups defined in vpc\_security\_group\_ids will be replaced with the default security group after the function is destroyed. Set the replacement\_security\_group\_ids variable to use a custom list of security groups for replacement instead. | `bool` | `null` | no |
 | <a name="input_replacement_security_group_ids"></a> [replacement\_security\_group\_ids](#input\_replacement\_security\_group\_ids) | (Optional) List of security group IDs to assign to orphaned Lambda function network interfaces upon destruction. replace\_security\_groups\_on\_destroy must be set to true to use this attribute. | `list(string)` | `[]` | no |
 | <a name="input_reserved_concurrent_executions"></a> [reserved\_concurrent\_executions](#input\_reserved\_concurrent\_executions) | The amount of reserved concurrent executions for this Lambda Function. A value of 0 disables Lambda Function from being triggered and -1 removes any concurrency limitations. Defaults to Unreserved Concurrency Limits -1. | `number` | `-1` | no |
 | <a name="input_role_description"></a> [role\_description](#input\_role\_description) | Description of IAM role to use for Lambda Function | `string` | `null` | no |

variables.tf

@@ -226,7 +226,7 @@ variable "snap_start" {
 variable "replace_security_groups_on_destroy" {
   description = "(Optional) When true, all security groups defined in vpc_security_group_ids will be replaced with the default security group after the function is destroyed. Set the replacement_security_group_ids variable to use a custom list of security groups for replacement instead."
   type        = bool
-  default     = false
+  default     = null
 }
 
 variable "replacement_security_group_ids" {