There is no reason to take an attitude when I was just giving suggestions. I agree they are time consuming projects but taking some small bites can go a long way.
Some quick things you can do to help declutter:
1. Get rid of old landmarks
2. Get rid of notecards
3. Use a script to find duplicates
4. If you don't have them yet, start creating folders to start cleaning up, such as Christmas, clothes (which I have many subfolders), furniture, etc. Do a search to be able to find these items quickly. Then you can go back and work on the folders little by little. By doing this, I was able to clean up my inventory so I only had the sorting folders at the bottom of my inventory. I did a similar thing under my Objects folder. Gratefully I started using folders when I first started SL so at least I had a little more organized mess.
Take my advice or not. I was just trying to help.
For instance, the majority of my textures came boxed (and I save them already boxed) so I quickly moved those boxes into a single box that has a script to read the contents without having to open the box. When it comes to holiday items, those are easy to throw into a single box that I rez at that holiday time. Getting rid of old landmarks and notecards are the two quickest and easiest ways to debulk you inventory.
I think it would have been great to have some of the tools I mentioned in the very beginning so my suggestion may still help others who are new or have small inventories right now.
I agree that I would LOVE to be able to work on my inventory when I am offline or to have some better tools to manage our inventories but if you have the time to do it offline, isn't it still the same amount of time you need to work on it?