Once I have the data what's it good for?
It's good for anyone who wants to know the current weather or maintain a continuous log of weather at a field site. This covers many different categories of user. It could be an outdoor activity club (sailing, windsurfing, microlights, model aircraft flying etc etc) where members may live at some considerable distance from the site and want to be able to look up on the web to see whether local conditions are suitable for the activity. Agriculture is a prime candidate - farmers often run fields maybe 10, 20, 30 miles away where local weather conditions may be (or have been, eg how much rain was there in the past few days) rather different from their home. It could be a field location that's used for research or educational use where the project under way requires a continuous weather record. It could be a commercial operation such as waste disposal or quarrying where there is a legal requirement to maintain environmental/weather records. And so on.
Whether it then classifies as a remote station depends on whether mains power or a fixed line data link might already be available in which case it will typically be better to use what's already available. But quite often in many locations away from habitation (which doesn't necessarily have to be in remote areas) neither will be easily available. And sometimes it may just be simpler and more reliable to use an autonomous remote station rather than relying on Joe at the distant site to remember his training day and to upload weather data at regular intervals, check the instrumentation batteries regularly etc.