I am a 22 year old college student based in the suburbs of Salt Lake City, and had 452,000 miles in my SkyMiles Account. I've been a SkyMiles member since 2014 and have read about frequent flier programs and aviation for about 15 years. I'm a Platinum Medallion at the moment. I now have 415,000 miles after booking a weekend trip on Delta to PHX for this week. I am well aware that SkyMiles is not the best for international ,travel, but is okay for domestic travel. Was the round trip a good use of SkyMiles for my first "real" usage of miles?