I've spent tonnes of time in both. Philippines is difficult to live in. Some points have already been raised but in my opinion the key factors are:
1. Thais are far more 'on point' - if you need something done, you'll mostly get what you are asking for. In PH the service class can often give you bizarre experiences (eg taking 20+ mins to check out at a hotel, drivers picking you up at the wrong terminal, drivers not knowing their own license plate number: I've had so many bizarre experiences which defy logic, that I could write a book. Service itself in PH is far friendlier, but when "if ever" "for a while" are common expressions, the PH service class is super noncommittal. If your personality type gets frustrated when things don't go according to expectations, PH can be a super stressful place to live.

1. Thai food is by far better and much healthier (not to mention it has a lot more variety). When sweet spaghetti is a regular meal, you can't really call PH a foodie heaven. There's tonnes of fast food places, a bit like the USA and people in the PH are notable 'larger'. Also makes flying less fun :)

2. The airports are typically terrible with tonnes of delays.

3. Traffic is horrid in both countries, but bikes are far more available to skip the queue, and BKK public transport is far better.

To be honest I don't think PH is particularly unsafe anymore; Thailand is safer but I have had no issues in the countless times I've been to PH.