Yes, I already own a 6 gallon carboy, a 1.25 (ish) gallon carboy for small batches, a 5 gallon bucket (for secondary fermenting if needed), and a bottling bucket with an auto siphon as well as a spigot/bottle filler. I also own a 1.5 gallon pot, a 4 (ish) gallon pot, and a 7.5 gallon pot. So, I have the items I would need to brew 5 gallon extract brews, or 1 gallon all grains (or any 3 gallon brews as well). I just don't think I am ready to spend on a lauter tun, a burner, and possible a mash tun or 10 gallon pot.
I will give you a quick breakdown of what I have found in my brewing experience:
I have done small batch all-grains mostly. I really enjoy this process, it feels like I am "earning" my beers. I like the method, I get to feel hands on. I just don't like the small yield for roughly the same amount of work, hence the desire to jump to 5 gallon all grains.
I have also done a few 5 gallon extract brews. I am OK with this process, but it feels odd at times. I guess the part where you add the syrupy extract... it just feels "manufactured" at times. I really hope to not offend anyone who loves them, because I know how much work these can be... I know it's not the easy way out. I just don't get the same "hands on" feeling, because it feels like I would not be able to do this without buying an entire recipe kit. At least with all grain, I could go to a local brewshop and buy some grain. I am sure you can buy extract there as well, but I just don't get the same feeling of accomplishment. It feels like I am adding stuff that I have no clue about.
Thus, BiaB is sort of in the middle. You have all the ingredients in front of you, and you sort of know what they all are. However, maybe I was just skewed by the name... it reminded me of kits for other crafts, where you opened the box, and 75% of the work was done for you already. Just drop the bag in water, and wait/stir. Mostly, I just think it's my personality. I like to feel like I have done the extra work, so that I can enjoy the spoils. I like to do things myself, rather than be handed something with half the work already done for me. Overall, BiaB is not something I hate, I just prefer to do more work and rely less on others. Again, I truly hope none of this offended anyone, and I am sure my perspective is a little wrong. I just feel like BiaB isn't my jam.