The short answer should be: "Absolutely, if Android does everything you need." I have bought many tablets over the years going back to pocket PCs, OQOs and so on, and have always tried to (with mostly no success) use them as desktop replacements. I've finally found it with my current tablets that I carry with me everywhere; a Nexus 10 (Android) and a Dell Venue 8 Pro (Windows 8.1).
Both of them are awesome devices for their respective reasons. I bought the Venue 8 Pro because I wanted to have more powerful desktop apps at my beck and call any moment, and even though it's a quad-core Atom, it runs desktop apps rather well. I have 64GB SSD plus another 64GB in MicroSD and it's literally feels like a desktop-class PC in a 8" tablet form factor.
However, I find myself using Android more and more with a keyboard for a number of reasons. First of all, for the things that Android can do, it does much faster and better than Windows. For keyboard-oriented users, you can learn shortcuts to get around in Android at light speed, jumping between apps in few taps, cutting and pasting text, searching and starting an app in a few keystrokes, etc. Metro apps tend to force you back to the mouse for trivial, repetitive tasks which is annoying. E-mail? No comparison, Gmail for Android simply rocks, and there are plenty of desktop-like e-mail clients for Android if you prefer. Browsing? Well, Internet Explorer for Windows 8.1 has a great feel and is sooo fast, but it's still damn Internet Explorer and I prefer to sync Chrome data between my desktops and tablets. (though apparently Chrome now has a Metro mode) Text editing and programming on Android is really quite good. There is nothing on the level of Sublime Text but there are many syntax-aware editors that will sync to Dropbox, Google Drive or even Github. For graphics, Android has a huge number of apps tailored for the touch screen that are very good like Adobe's PS Mobile. Windows 8.1 has no deficit of paint apps but only a few that really work great on the touch screen like Fresh Paint and Art Rage - others are more desktop-oriented and while they work, can be a bit tedious. For pro-level photo tools, Photo-Mate for Android is a great RAW-capable photo editor that is very comparable to Lighttable and Rawtherapee for Windows.
Sadly for music apps, there's not nearly enough for Android. There's some good DAWs (including apparently a powerful new one coming soon) and some sample-based music construction tools, but nothing that competes with the full music workstation apps for Windows desktop or iPad.
Another area Android really could use some improvements is in speed. Generally, Windows 8.1 on Dell Venue 8 Pro flies like a demon and there are a few really great Metro apps (like TouchMail) that work as well a Android equivalents but selection is still very limited.
Still, I'd definitely consider an Android laptop if it came with a 2560x1600 display and a fast 8-core CPU. Windows laptops have been stuck at quad-core and tiny incremental speed increases for quite a few years thanks to Intel but companies producing ARM cores are innovating at light speed, adding all sorts of processing units, DSP, VPU (for such things as 4K HEVC/VP9 decode) and even FPGA-like reprogrammable cores (as in Samsung Exynos) to their designs that can be utilized generically through Android's APIs.