The Intel® SSD Optimizer uses TRIM command to remove deleted data files from NAND flash management blocks on the SSD, allowing the operating system to inform an SSD which blocks of data are no longer considered in use and can be deleted.
Windows* 7 and Windows* 8 natively implement Trim functionality, so you do not need to run the Intel SSD Optimizer in this configuration. Please take into consideration that this requires the standard Microsoft AHCI driver or Intel® RST driver version 9.6 or later, using drives in standard SATA configurations without RAID.
Running the optimizer manually wouldn't necessarily wear down the drive since any old data would eventually have to be deleted, however, it may not be required.
For more information please check pages 16-18 of the Intel® Solid-State Drive Toolbox User Guide.