Same here
started this year with a S3 I was due to a upgrade with my phone carrier so I decided to go for the Nexus 5 great phone but awful battery life so I exchanged after one week for the G2 and that it's a great phone, the best one I had so far! But no sd card option it's a big no for me, sold it after 6 months and bought the S5(went for the safe option) I will try to keep it for one year
I got stuck in Samsung phones. I am slave of AMOLOED screen and SD card slot. So my history is S2-S5. I bought S5 last weeek just because of water resistance. I am fishing a lot and I had situations where S4 was under extreme tests. Once it was under heavy rain and once actually for 5 sec completely under the water, however survived both events. I decided not to risk it anymore and to buy S5. Plus bigger sensor in the camera is also a good excuse to buy it. And as always I promise again to myself that this is the last phone I will buy. How is your S5 like it so far?